Reported syphilis in Stanislaus runs about 55% higher than the US average. For your first screening or a routine test in Modesto, California, consider if you prefer convenience or flexibility. Some clinics take walk-ins, while labs and at-home kits fit your schedule.
10 testing centers serve Modesto, CA — the nearest, Quest Diagnostics, about 0.1 miles away. Compare 8 community and public clinics, private labs, and at-home kits below.
Listings tagged Community health center are federally funded health centers and rural clinics that treat everyone regardless of insurance or ability to pay — required to bill on a sliding fee scale and provide confidential care, and in many states minors may consent to their own STI testing. A Title X tag flags centers funded for confidential family-planning services; confirm current participation when you call.
Today's offer: $10 off any test panel — applied automatically at checkout.
When can I test? Exposure-window calculator
Testing too soon can miss an infection. Enter the date of possible exposure to see the earliest a test can reliably detect each STI.
Infection
Earliest reliable test
Conclusive after
Guidance only — confirm timing with a clinician. A negative result before the conclusive date may need a repeat test.
Community health center
0.8 miles
Golden Valley Health Centers
★★★★☆4.4(31 reviews)?
Review sources
EasySTD reviews31
Rated 4.4 out of 5 from 31 reviews
About 1 mile southwest of Modesto in Modesto: Golden Valley Health Centers is a community health clinic offering free HIV testing alongside treatment and prevention for anyone seeking care. It's ideal for people without insurance, those on Medicaid, and anyone building a prevention plan with PrEP or vaccines.
Read full overviewShow less
A full-service clinic for testing and prevention
Golden Valley Health Centers combines STI testing with on-site treatment and prevention in one visit. You can get screened for chlamydia, gonorrhea, syphilis, and HIV (both rapid and conventional tests), receive same-day treatment for bacterial infections, and start or continue PrEP if that's part of your plan. HPV and hepatitis A vaccines are also available, along with free mpox vaccination.
Free HIV testing; sliding scale for the rest
HIV testing is free. Other services run on a sliding scale based on income, and Medicaid and insurance are accepted. If you're uninsured or paying out of pocket, the sliding scale keeps costs manageable without turning anyone away.
Appointments required; Spanish interpretation available
You'll need to schedule ahead rather than walk in. Spanish interpretation is offered, making the clinic accessible to a wider community.
Best for anyone building a prevention plan
This clinic works well for people without insurance or on Medicaid who want testing, treatment, and prevention (like PrEP or vaccines) in one place, plus the support of HIV counseling to make informed decisions.
Listing verified Jan 2026 · source: CDC NPIN + HRSA
Tests offered
Gonorrhea
Syphilis
Chlamydia
Rapid HIV
Conventional HIV
Serves
Adolescents/Youth/Teens
Low Income Persons
Persons with STI
Care services
Family Planning
STI Treatment
Human Papillomavirus Vaccine (HPV)
Pre-Exposure Prophylaxis (PrEP)
HIV/AIDS Medical Treatment
Hepatitis A Vaccine
Adult Hepatitis B Vaccine
Prevention services
HIV Test Counseling
Fees & payment
Free Mpox Vaccine
Medicaid Accepted
Sliding Scale
Fee
Insurance Accepted
1.2 miles
Stanislaus Health Services Agency
★★★★☆4.4(80 reviews)?
Review sources
EasySTD reviews80
Rated 4.4 out of 5 from 80 reviews
About 1 mile northeast of Modesto in Modesto: Stanislaus Health Services Agency screens for HIV, chlamydia, gonorrhea, syphilis, hepatitis B and C, herpes, and TB—with same-visit treatment for bacterial infections and counseling built in. It's built for anyone seeking testing plus prevention, whether you have insurance, Medicaid, or need a sliding-scale fee.
Read full overviewShow less
Testing and treatment in one visit
Stanislaus Health Services Agency runs rapid and conventional HIV tests alongside screening for chlamydia, gonorrhea, syphilis, hepatitis B and C, herpes, and TB. Bacterial STIs—chlamydia, gonorrhea, and syphilis—are treated on site the same day. HIV and hepatitis results that need confirmation are managed through follow-up care and counseling.
Prevention built into every visit
Beyond testing, the clinic offers HPV and hepatitis A vaccines, plus education on STI and HIV prevention. Family planning and medication adherence counseling round out the visit, so you leave with a plan, not just results.
Fees fit different situations
Testing and services are free for Medicaid patients and those on Medicare. Everyone else pays on a sliding scale based on income, or a standard fee if you're uninsured and don't qualify for the scale.
Walk in anytime; Spanish and Cambodian spoken
No appointment needed—drop in when it suits you. Staff offer interpretation in Spanish and Cambodian/Khmer, so language won't slow you down.
About 2 miles north of Modesto in Modesto: Planned Parenthood Mar Monte is a full-service sexual health clinic offering testing, treatment, and prevention under one visit—ideal for anyone seeking affordable care on a sliding scale, whether insured or paying out of pocket.
Read full overviewShow less
A sexual health clinic built for access
Planned Parenthood Mar Monte handles testing, treatment, and prevention in a single visit. You can walk in for a rapid HIV test, get screened for chlamydia, gonorrhea, syphilis, and herpes, start antibiotic treatment for bacterial infections on the spot, and leave with condoms and education—all designed to fit your schedule and budget.
Testing and same-visit treatment
The clinic screens for HIV (rapid and conventional), chlamydia, gonorrhea, syphilis, and herpes. Bacterial infections like chlamydia and gonorrhea can be treated the same day. If you're at risk for HIV, you can discuss PrEP to prevent infection, and the clinic also offers HPV vaccination to protect against cervical and other cancers.
Sliding scale, insurance accepted, no one turned away
Testing and treatment are free or low-cost on a sliding scale based on income; Medicaid, Medicare, and private insurance are accepted. Interpretation services in Spanish and other languages are available, and appointments are required—call ahead to book.
Best for anyone seeking affordable, judgment-free care
Whether you're uninsured, on Medicaid, or looking for preventive care like PrEP or HPV vaccination, this clinic removes cost and logistics as barriers. It's especially valuable if you need same-visit testing and treatment without a long wait or multiple trips.
About 3 miles north of Modesto in Modesto: Stanislaus County Health Services Agency is a public health clinic offering STI testing, treatment, and prevention education in one visit—ideal for anyone with Medicaid or insurance, or those paying out of pocket who want straightforward county care.
Read full overviewShow less
A public health clinic for testing and treatment
Stanislaus County Health Services Agency is a county health department clinic where you can get tested for gonorrhea, chlamydia, syphilis, and HIV, then receive treatment for bacterial infections the same visit if needed. The clinic also offers HPV and hepatitis A and B vaccines, plus condom distribution and prevention education—all in one place, all with a clinical, no-frills approach.
Testing, treatment, and prevention in one visit
You'll be screened for the major bacterial STIs and HIV; if you test positive for chlamydia, gonorrhea, or syphilis, treatment is available on site. The clinic also provides counseling before and after HIV testing and hands out condoms, so prevention is woven into the visit from the start.
Cost covered by Medicaid or insurance; fees for others
If you have Medicaid or insurance, bring your card and you're covered. If you're uninsured, expect a standard visit fee. Spanish interpretation is available, and staff can arrange interpretation for other languages if you call ahead to schedule your appointment.
Best for those with insurance or Medicaid
This clinic works best if you have Medicaid or insurance already in hand, or if you're comfortable with a standard county clinic fee. Because appointments are required, call ahead rather than dropping in.
A safety-net rural health clinic about 7 miles from Modesto. Sliding-scale STD testing and care are typical here — call ahead to confirm the exact panel and pricing.
About 8 miles east of Modesto in Hughson: Livingston Community Health screens for HIV, syphilis, gonorrhea, chlamydia, herpes, and TB, with same-visit treatment for bacterial infections and prevention education woven throughout. It's built for anyone seeking affordable testing and care, from routine screening to family planning.
Read full overviewShow less
Testing and treatment in one visit
Livingston Community Health tests for HIV, syphilis, gonorrhea, chlamydia, herpes, and TB. If you test positive for gonorrhea, chlamydia, or syphilis, treatment is available the same day. TB testing and prevention education are also on-site, so a single appointment can cover screening, diagnosis, and care.
Prevention built into every visit
Beyond testing, the clinic offers HPV and hepatitis A vaccines, plus adult hepatitis B vaccination. HIV test counseling and STI prevention education are standard parts of your visit, and family planning services round out reproductive health support.
Sliding-scale fees for most people
There is a fee for visits, but Livingston Community Health uses a sliding scale so cost adjusts to your income. Medicaid, Medicare, and most insurance plans are accepted, making care accessible whether you're insured or paying out of pocket.
Appointment required; Spanish interpretation available
You'll need to schedule ahead—walk-ins aren't available. Spanish interpretation is offered, so language won't be a barrier to care.
A safety-net rural health clinic about 11 miles from Modesto. Sliding-scale STD testing and care are typical here — call ahead to confirm the exact panel and pricing.
A safety-net rural health clinic about 11 miles from Modesto. Sliding-scale STD testing and care are typical here — call ahead to confirm the exact panel and pricing.
Modesto, CA (Stanislaus County) STD testing locations
10 testing centers serving Modesto and Stanislaus County — screening for Chlamydia, Gonorrhea, Syphilis, Herpes, Hepatitis A, Hepatitis B, Hepatitis C, Rapid HIV, Conventional HIV, TB, HIV.
Community health center
Listings tagged Community health center are federally funded health centers and rural clinics that treat everyone regardless of insurance or ability to pay — required to bill on a sliding fee scale and provide confidential care, and in many states minors may consent to their own STI testing. A Title X tag flags centers funded for confidential family-planning services; confirm current participation when you call.
Source: CMS FQHC & Rural Health Clinic enrollment files (data.cms.gov), refreshed quarterly. Title X status reflects the latest OPA grantee list.
How we rank: vetted partner labs (clearly marked Sponsored) appear first; every other center is listed free and ordered by verified review score, then distance.
Premium Partner
Quest Diagnostics
Editor's pick
Results in 1–2 days
★★★★☆3.7(156 reviews)?
Review sources
Google130
EasySTD reviews26
Rated 3.7 out of 5 from 156 reviews
1008 6th Street, Modesto, CA, 95354
0.1 miles away
Testing too soon can miss an infection. Enter the date of possible exposure to see the earliest a test can reliably detect each STI.
Infection
Earliest reliable test
Conclusive after
Guidance only — confirm timing with a clinician. A negative result before the conclusive date may need a repeat test.
Community health center
Golden Valley Health Centers
Best for free testing
★★★★☆4.4(31 reviews)?
Review sources
EasySTD reviews31
Rated 4.4 out of 5 from 31 reviews
About 1 mile southwest of Modesto in Modesto: Golden Valley Health Centers is a community health clinic offering free HIV testing alongside treatment and prevention for anyone seeking care. It's ideal for people without insurance, those on Medicaid, and anyone building a prevention plan with PrEP or vaccines.
Read full overviewShow less
A full-service clinic for testing and prevention
Golden Valley Health Centers combines STI testing with on-site treatment and prevention in one visit. You can get screened for chlamydia, gonorrhea, syphilis, and HIV (both rapid and conventional tests), receive same-day treatment for bacterial infections, and start or continue PrEP if that's part of your plan. HPV and hepatitis A vaccines are also available, along with free mpox vaccination.
Free HIV testing; sliding scale for the rest
HIV testing is free. Other services run on a sliding scale based on income, and Medicaid and insurance are accepted. If you're uninsured or paying out of pocket, the sliding scale keeps costs manageable without turning anyone away.
Appointments required; Spanish interpretation available
You'll need to schedule ahead rather than walk in. Spanish interpretation is offered, making the clinic accessible to a wider community.
Best for anyone building a prevention plan
This clinic works well for people without insurance or on Medicaid who want testing, treatment, and prevention (like PrEP or vaccines) in one place, plus the support of HIV counseling to make informed decisions.
PrEP
401 Paradise Road, Suite East Modesto, CA 95351
0.8 miles away
Family Planning · STI Treatment · Human Papillomavirus Vaccine (HPV) · Pre-Exposure Prophylaxis (PrEP) · HIV/AIDS Medical Treatment · Hepatitis A Vaccine · Adult Hepatitis B Vaccine
About 1 mile northeast of Modesto in Modesto: Stanislaus Health Services Agency screens for HIV, chlamydia, gonorrhea, syphilis, hepatitis B and C, herpes, and TB—with same-visit treatment for bacterial infections and counseling built in. It's built for anyone seeking testing plus prevention, whether you have insurance, Medicaid, or need a sliding-scale fee.
Read full overviewShow less
Testing and treatment in one visit
Stanislaus Health Services Agency runs rapid and conventional HIV tests alongside screening for chlamydia, gonorrhea, syphilis, hepatitis B and C, herpes, and TB. Bacterial STIs—chlamydia, gonorrhea, and syphilis—are treated on site the same day. HIV and hepatitis results that need confirmation are managed through follow-up care and counseling.
Prevention built into every visit
Beyond testing, the clinic offers HPV and hepatitis A vaccines, plus education on STI and HIV prevention. Family planning and medication adherence counseling round out the visit, so you leave with a plan, not just results.
Fees fit different situations
Testing and services are free for Medicaid patients and those on Medicare. Everyone else pays on a sliding scale based on income, or a standard fee if you're uninsured and don't qualify for the scale.
Walk in anytime; Spanish and Cambodian spoken
No appointment needed—drop in when it suits you. Staff offer interpretation in Spanish and Cambodian/Khmer, so language won't slow you down.
830 Scenic Drive, Suite A Modesto, CA 95350
1.2 miles away
Family Planning · Medication Adherence Education and Counseling · STI Treatment · Human Papillomavirus Vaccine (HPV) · Hepatitis A Vaccine · Adult Hepatitis B Vaccine
Prevention services
TB Prevention/Education · STI Prevention/Education · Partner Notification · HIV/AIDS Prevention/Education · HIV Test Counseling · Hepatitis Prevention/Education
About 2 miles north of Modesto in Modesto: Planned Parenthood Mar Monte is a full-service sexual health clinic offering testing, treatment, and prevention under one visit—ideal for anyone seeking affordable care on a sliding scale, whether insured or paying out of pocket.
Read full overviewShow less
A sexual health clinic built for access
Planned Parenthood Mar Monte handles testing, treatment, and prevention in a single visit. You can walk in for a rapid HIV test, get screened for chlamydia, gonorrhea, syphilis, and herpes, start antibiotic treatment for bacterial infections on the spot, and leave with condoms and education—all designed to fit your schedule and budget.
Testing and same-visit treatment
The clinic screens for HIV (rapid and conventional), chlamydia, gonorrhea, syphilis, and herpes. Bacterial infections like chlamydia and gonorrhea can be treated the same day. If you're at risk for HIV, you can discuss PrEP to prevent infection, and the clinic also offers HPV vaccination to protect against cervical and other cancers.
Sliding scale, insurance accepted, no one turned away
Testing and treatment are free or low-cost on a sliding scale based on income; Medicaid, Medicare, and private insurance are accepted. Interpretation services in Spanish and other languages are available, and appointments are required—call ahead to book.
Best for anyone seeking affordable, judgment-free care
Whether you're uninsured, on Medicaid, or looking for preventive care like PrEP or HPV vaccination, this clinic removes cost and logistics as barriers. It's especially valuable if you need same-visit testing and treatment without a long wait or multiple trips.
Title XPrEP
1431 Mchenry Avenue, Suite 100 Modesto, CA 95350
1.9 miles away
About 3 miles north of Modesto in Modesto: Stanislaus County Health Services Agency is a public health clinic offering STI testing, treatment, and prevention education in one visit—ideal for anyone with Medicaid or insurance, or those paying out of pocket who want straightforward county care.
Read full overviewShow less
A public health clinic for testing and treatment
Stanislaus County Health Services Agency is a county health department clinic where you can get tested for gonorrhea, chlamydia, syphilis, and HIV, then receive treatment for bacterial infections the same visit if needed. The clinic also offers HPV and hepatitis A and B vaccines, plus condom distribution and prevention education—all in one place, all with a clinical, no-frills approach.
Testing, treatment, and prevention in one visit
You'll be screened for the major bacterial STIs and HIV; if you test positive for chlamydia, gonorrhea, or syphilis, treatment is available on site. The clinic also provides counseling before and after HIV testing and hands out condoms, so prevention is woven into the visit from the start.
Cost covered by Medicaid or insurance; fees for others
If you have Medicaid or insurance, bring your card and you're covered. If you're uninsured, expect a standard visit fee. Spanish interpretation is available, and staff can arrange interpretation for other languages if you call ahead to schedule your appointment.
Best for those with insurance or Medicaid
This clinic works best if you have Medicaid or insurance already in hand, or if you're comfortable with a standard county clinic fee. Because appointments are required, call ahead rather than dropping in.
1209 Woodrow Avenue, Suite B10 Modesto, CA 95350
3.4 miles away
A safety-net rural health clinic about 7 miles from Modesto. Sliding-scale STD testing and care are typical here — call ahead to confirm the exact panel and pricing.
About 8 miles east of Modesto in Hughson: Livingston Community Health screens for HIV, syphilis, gonorrhea, chlamydia, herpes, and TB, with same-visit treatment for bacterial infections and prevention education woven throughout. It's built for anyone seeking affordable testing and care, from routine screening to family planning.
Read full overviewShow less
Testing and treatment in one visit
Livingston Community Health tests for HIV, syphilis, gonorrhea, chlamydia, herpes, and TB. If you test positive for gonorrhea, chlamydia, or syphilis, treatment is available the same day. TB testing and prevention education are also on-site, so a single appointment can cover screening, diagnosis, and care.
Prevention built into every visit
Beyond testing, the clinic offers HPV and hepatitis A vaccines, plus adult hepatitis B vaccination. HIV test counseling and STI prevention education are standard parts of your visit, and family planning services round out reproductive health support.
Sliding-scale fees for most people
There is a fee for visits, but Livingston Community Health uses a sliding scale so cost adjusts to your income. Medicaid, Medicare, and most insurance plans are accepted, making care accessible whether you're insured or paying out of pocket.
Appointment required; Spanish interpretation available
You'll need to schedule ahead—walk-ins aren't available. Spanish interpretation is offered, so language won't be a barrier to care.
A safety-net rural health clinic about 11 miles from Modesto. Sliding-scale STD testing and care are typical here — call ahead to confirm the exact panel and pricing.
A safety-net rural health clinic about 11 miles from Modesto. Sliding-scale STD testing and care are typical here — call ahead to confirm the exact panel and pricing.
Beyond the public testing sites above, these federally certified (CLIA) labs serve Stanislaus County — each lab's town is shown on its card below. Many
test through a doctor's order or by appointment rather than walk-in, so call ahead to
confirm STD/STI testing and availability before visiting.
Showing the 6 closest CLIA-certified labs in Stanislaus County.
Source: CMS CLIA registry (Provider of Services), Q1 2026. Federal public records, filtered to active labs
certified for moderate-to-high-complexity testing — the level chlamydia/gonorrhea NAAT and syphilis serology
require — near Modesto. Any star rating is the CMS Hospital Compare overall rating where the lab is a rated
hospital. Inclusion is not an endorsement and doesn't confirm a facility offers STD testing — always call to verify.
Test from home
At-home STD testing in Modesto, CA
The nearest testing center is about 0 miles away — if you'd rather skip the
trip, an at-home kit ships to Modesto, you collect the sample privately, and mail it back to a CLIA-certified
lab. Results come online in days, with a clinician available if anything is positive. Same labs as a clinic,
no waiting room — and you can read how accurate at-home STD tests are before you order.
Want a free option first? The CDC-supported
TakeMeHome
program mails free at-home HIV self-test kits — and, in many areas, free STI kits — to your door, with no insurance or payment needed. The paid kits below add broader panels and faster turnaround.
Best range — couples & full panels
myLAB Box
$79 & up
Screens for:
Up to 14 infections — incl. HIV, syphilis, chlamydia, gonorrhea, hepatitis & herpes
Every kit uses CLIA-certified labs. At-home testing is for screening; a reactive result should be confirmed and
treated by a clinician. Prices and panels shown are illustrative and change often — confirm current details on
the provider's site.
Local clinicians
Doctors near Modesto who can order STD testing
Beyond dedicated clinics, 1,282 primary-care, OB-GYN, infectious-disease
and other clinicians practice within 30 miles of Modesto — any of them can order a confidential STD panel as
part of a regular visit, and 419 offer telehealth.
These are licensed clinicians who can order STD testing during a visit — not dedicated STD-testing clinics.
Confirm services and availability before booking. Source: CMS Doctors & Clinicians (Medicare-enrolled providers).
Local context
About Modesto, CA
Modesto is a large city in Stanislaus, California, where a notable share of residents speak limited English (bilingual services help). Rouse sits just up the road, and four-year degrees are in the minority, near 18.7%. Testing options are plentiful — clinics, labs, and pharmacies nearby, plus at-home kits and telehealth.
ZIP 95358 snapshot
Inside Modesto's ZIP code
These ZIP-level Census figures show the demographics that shape testing demand in Modesto.
Residents
30,994
Median age
31.3
Median income
$74,434
Getting there
How residents reach testing in Modesto
Walkability10.17 / 20 · Below average
At 10.17/20 on the EPA walkability index, day-to-day errands in Modesto generally mean driving — plan on a car or rideshare to reach a clinic, and check each listing's hours and phone before you go.
Source: EPA National Walkability Index 2021.
Have symptoms?
Do I have an STD?
Use our confidential symptom checker to see which STDs match your symptoms — and which tests are recommended near Modesto.
Pharmacies stock FDA-authorized at-home STI and HIV self-tests and fill prescriptions for treatment. Locations via OpenStreetMap.
Nearby cities & towns
STD testing near Modesto in Stanislaus County
Just outside Modesto? These nearby Stanislaus County communities have their own testing guides — clinics, at-home kits, and free screening close to home.
STDs & HIV in Stanislaus County: the local picture
Here's how reported STI rates in Stanislaus County — the county that includes Modesto — compare with California and U.S. averages, based on the most recent 2023 surveillance data.
An estimated ~28% of Stanislaus County residents are aged 15–34 (ACS) — the age group with the highest reported chlamydia and gonorrhea rates nationally, which is why local screening access matters here.
Lower chlamydia rate than 36% of the state's 58 counties (ranked #22)
Reported STD rates per 100,000 — Stanislaus County vs California vs U.S.
Stanislaus CountyCaliforniaU.S.
Infection
Stanislaus County
California
United States
Chlamydia
399.32,202 cases▼ 19%
491.1
492.2
Gonorrhea
106.6588 cases▼ 44%
190.2
179.5
Syphilis (P&S)
24.5135 cases▲ 50%
16.3
15.8
Syphilis (early)
15.183 cases▼ 21%
19.1
16
Syphilis (late/unknown)
47.2260 cases▲ 1%
46.7
29.5
Rates per 100,000 population, 2023. Source: CDC NCHHSTP AtlasPlus (county, state & U.S., all-ages basis). Population figures: U.S. Census Bureau ACS. County figures are the latest available surveillance estimates. Bars are scaled to the highest rate shown.
Reading these numbers: reported case rates only count infections that were actually tested for and diagnosed, so they track local screening effort as much as true spread — a higher rate can reflect more testing, a lower one less. Either way, most STIs cause no symptoms, so treat the figures above as context rather than a verdict, and test on the CDC's schedule regardless of how your area looks.
Reported STD rates in Stanislaus County over time (per 100,000)
Chlamydia ▼ 3% vs 2022
Chlamydia
Gonorrhea
Syphilis (P&S)
Between 2020 and 2023 in Stanislaus County, chlamydia has fallen from 461.4 to 399.3 per 100,000 (13%), gonorrhea has fallen from 229.5 to 106.6 per 100,000 (54%), and P&S syphilis has fallen from 26.9 to 24.5 per 100,000 (9%).
The 2020 dip reflects reduced pandemic-era screening, not lower transmission. Source: CDC NCHHSTP AtlasPlus (county, state & U.S., all-ages basis).
Community health context
What shapes testing access in and around Modesto
Adults uninsured
19.5%
No routine checkup
30.9%
No transportation
14.6%
Binge drinking
16.9%
Frequent mental distress
20%
Depression
20.9%
Below poverty line
14.7%
Primary-care ratio
1,528 : 1
Stanislaus County
Primary-care shortage score 16 / 26
Medically Underserved Area · IMU 61.1
Social Vulnerability Index · 85th percentile nationally
Sources: CDC PLACES (ZIP), County Health Rankings, CDC/ATSDR SVI, HRSA HPSA, HRSA MUA/P, Neighborhood Atlas ADI. Lower insurance coverage, fewer routine checkups, and a thin primary-care ratio all raise the value of low-cost public clinics and at-home testing in Stanislaus County.
Local HIV snapshot
HIV in Stanislaus County (2023)
People living with HIV
207 / 100k
New diagnoses (2023)
55
On PrEP (coverage)
12.6%
Stanislaus County HIV care continuum (2023)
Stanislaus County recorded 12.2 new HIV diagnoses per 100,000 (2023), against 14.9 statewide and 13.7 nationally.
Among Stanislaus County residents living with HIV, 77.9% are in care · 70.8% are virally suppressed.
Early, routine testing is what moves these numbers — it is the entry point to PrEP, treatment, and viral suppression.
Sources: AIDSVu (Emory/Gilead) · CDC AHEAD · CDC AtlasPlus · CDC NCHHSTP AtlasPlus (county care continuum). The CDC recommends everyone aged 13–64 test for HIV at least once — every lab and clinic listed above offers HIV testing, and free rapid HIV testing is available at the county health department.
Pregnant or planning to be?
Congenital syphilis — passed from parent to baby in pregnancy — is the fastest-rising STI in the country.
U.S. cases climbed from 2,163 in 2020 to 3,882 in 2023.
It is almost entirely preventable: the CDC recommends a syphilis test at the first prenatal visit, and every clinic and lab listed for Stanislaus County tests for syphilis.
Source: CDC NCHHSTP AtlasPlus, 2023 (county-level congenital syphilis is not published).
Compiled and checked by EasySTD's editorial team against CDC and public-health sources. This is educational information, not a substitute for advice from a licensed clinician. Our editorial guidelines →
Two quick references for getting tested in Stanislaus County: the CDC's screening schedule (who should test, and how often) and the detection "window" for each infection (the earliest a test can reliably detect it). Select any infection to open its in-depth testing guide — every clinic and lab listed above for Modesto screens for them.
Who should get tested, and how often
Based on current CDC screening recommendations.
Group
Tests
How often
Everyone aged 13–64
HIV
At least once
Sexually active women under 25
Chlamydia, gonorrhea
Every year
Women 25+ with new or multiple partners
Chlamydia, gonorrhea
Every year
Pregnant people
HIV, syphilis, hepatitis B & C, chlamydia
Early in pregnancy
Gay & bisexual men (MSM)
Chlamydia, gonorrhea, syphilis, HIV
Every 3–6 months
Anyone who shares injection equipment
HIV, hepatitis B & C
At least yearly
All adults at least once
Hepatitis C
At least once
When to test: STD detection windows
Testing too early can return a false negative — confirm timing with a Modesto-area provider.
These are the federal Medicare reference prices for processing each lab test. Public clinics and the
community health centers serving Modesto often test free or on a sliding scale; private labs and at-home kits
bundle several tests into one fee. Use this as a per-test benchmark before you pay out of pocket, or see the full
guide to STD test costs for insurance, free, and at-home options.
Test
Reference price
CPT / HCPCS
Chlamydia (NAAT)
$47.80
87491
Gonorrhea (NAAT)
$47.80
87591
Trichomoniasis (NAAT)
$47.76
87661
HIV-1/2 antigen/antibody
$79.20
87389
HIV-1/2 antibody
$22.44
86703
Syphilis (RPR/VDRL)
$5.61
86592
Syphilis (treponemal antibody)
$17.49
86780
Herpes (HSV NAAT)
$47.76
87529
Hepatitis B surface antigen
$15.33
87340
Hepatitis C antibody
$29.16
86803
Source: Medicare Clinical Laboratory Fee Schedule, CMS — 2025 rates (data.cms.gov). Reference rate for the lab assay only — a clinic visit, sample collection, or a
bundled multi-test panel may cost more. Medicaid and most insurers cover STD screening at no out-of-pocket cost.
Prevention & treatment
PrEP, prevention & online treatment
Testing is one step. For residents of Modesto, telehealth covers the rest of the picture — HIV-prevention
medication (PrEP) and DoxyPEP to lower future risk, and discreet online treatment if a result comes back
positive. All prescribed by licensed U.S. clinicians.
Prevent (PrEP & DoxyPEP)
Daily or on-demand medication that prevents HIV — and DoxyPEP, which lowers the risk of syphilis, chlamydia and gonorrhea.
Mistr
Free online PrEP & DoxyPEP — HIV prevention, home lab kits, no in-person visit
Pricing varies by insurance and changes often — confirm on the provider's site. These services are not a
substitute for emergency care.
Privacy
Confidentiality & consent in California
The questions Modesto residents ask most before testing, answered under California law — which sets confidentiality and consent the same way statewide. Prefer to keep your name off the record? See our guide to anonymous STD testing.
Can a minor consent?
In California, minors aged 12 and older can consent to confidential STI testing and treatment on their own — no parental permission is required.
Will it show on my insurance?
If you use health insurance, an Explanation of Benefits (EOB) may be mailed to the policyholder. Under HIPAA you can ask your insurer in writing to send communications confidentially. To keep a test fully private, choose a self-pay private lab, an at-home kit, or a public health clinic — none of these bill your insurance.
Anonymous & no-insurance options
Public health clinics and at-home kits let you test without involving insurance or your regular doctor. Many California health departments offer free or low-cost STI testing, and several sites provide anonymous HIV testing.
Can my partner be treated too?
Yes. California permits Expedited Partner Therapy (EPT): if you test positive for chlamydia or gonorrhea, your provider can give you medication to pass to your partner — no separate exam or appointment needed for them.
Source: Guttmacher Institute — Minors' Access to STI Services; HIPAA 45 CFR 164.522; CDC — Legal Status of Expedited Partner Therapy (last updated Jul 2025). General information, not legal advice.
Good to Know
STD testing FAQs for Modesto, CA
Answers to the questions people ask most before getting tested.
Is walk-in STD testing available near Modesto?
Yes — several local labs offer same-day walk-in testing; best to call first.
Will my insurance pay for an STD test?
Usually yes — it can be billed to insurance, or paid out of pocket at a flat rate.
Is there free HIV testing near Modesto?
Yes — free HIV testing is available at public clinics in the area.
What does a full STD panel cover?
A full panel typically covers chlamydia, gonorrhea, syphilis, HIV, and hepatitis B and C.
What's the local chlamydia rate?
Stanislaus County reported ~399 chlamydia cases per 100,000 in 2023, below the California average.
When will I get my test results?
Most results are ready in about 1–2 days.
Is my STD test private?
Your results are part of your HIPAA-protected medical record; you can ask any clinic about its own privacy practices.
Does painful urination mean I need a test?
It's a common STI symptom; test for chlamydia and gonorrhea and have a provider check you.
How do I prevent STDs?
Use condoms, test regularly, get the HPV and hep B vaccines, and ask about PrEP for HIV.
Is syphilis curable?
Yes — syphilis is cured with antibiotics (usually penicillin), and earlier treatment prevents long-term damage.
