In Contra Costa County, chlamydia cases are reported 13% lower than the US average. If you need STD testing in Brentwood, California, whether after a potential exposure or as part of routine care, you can choose between community clinics, which are often low-cost or free, and private labs, which typically offer faster results and more flexible scheduling. See options below.
Available testing centers
12 testing options are listed for Brentwood, CA. The nearest, Quest Diagnostics, is about 1.0 miles away. Compare 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.
Source: CMS FQHC & Rural Health Clinic enrollment files (data.cms.gov), refreshed quarterly. Title X status reflects the latest OPA grantee list.
Contra Costa Health Services in Brentwood tests for gonorrhea, chlamydia, syphilis, and HIV on a sliding-scale fee accepted by Medicaid, Medicare, and most insurance. Appointments are required, and bacterial infections caught at your visit are treated the same day. Spanish-language care is available throughout.
When a language gap falls between a patient and their provider at a critical moment (a diagnosis, a treatment decision, a prevention plan) the cost is a delayed or missed intervention. At Contra Costa Health Services in Brentwood, Spanish extends through clinical conversation, not just the front desk, so nothing important waits on a third party to catch up.
Contra Costa Health Services in Brentwood prescribes and manages PrEP directly, meaning the provider who evaluates your eligibility also writes the prescription and tracks the regular HIV and kidney-function labs that keeping someone safely on it requires. PEP is also available through the clinic for prevention after exposure.
Languages
English, Spanish
Tests offered
Serves
Care services
Prevention services
Fees & payment
Listing verified Jan 2026 · Source: CDC NPIN
Antioch Health Center, in Antioch, carries federally qualified health center standing. A designation that ties STI screening fees directly to each patient's income on a sliding scale. Walk-ins are welcome for syphilis, gonorrhea, and chlamydia testing without needing an appointment first.
Tests offered
Fees & payment
A community safety-net federally qualified health center about 5 miles from Brentwood. Sliding-scale STD testing and care are typical here, call ahead to confirm the exact panel and pricing.
Tests offered
Fees & payment
La Clinica Oakley, in Oakley, carries federal qualification that locks in sliding-scale pricing tied directly to income: meaning the cost of syphilis, gonorrhea, and chlamydia screening shifts based on what a patient actually earns, with no appointment needed to get started.
Tests offered
Fees & payment
Brighter Beginnings Family Health Clinic Antioch Lone Tree, in Antioch, structures its fees on a sliding scale tied to income, so cost is never a barrier to care. Walk-ins are welcome for STI screening covering syphilis, gonorrhea, and chlamydia, with no one turned away for inability to pay.
Tests offered
Fees & payment
Community Practice Clinic Antioch, serving Antioch residents who are uninsured, paying cash, or navigating gaps between providers, applies federal FQHC sliding-scale fees to STI screening (syphilis, gonorrhea, and chlamydia) so costs adjust to income rather than standing in the way of care.
Tests offered
Fees & payment
Planned Parenthood Northern California in Antioch tests for HIV, gonorrhea, chlamydia, syphilis, herpes, hepatitis B, and hepatitis C, treating bacterial infections the same visit on a sliding-scale fee open to everyone: appointment required, Spanish and interpretation services available.
Spanish is a working language at this Antioch location, not routed through an external service. For other languages, interpretation is available, meaning the clinical conversation, risk discussion, and treatment instructions reach patients in the language they actually use to reason through health decisions.
As a Title X-funded site, Planned Parenthood Northern California in Antioch operates under federal confidentiality law, which means a minor's STI testing, contraception, and family planning services are legally protected from disclosure to parents or guardians, not as a policy preference but as a statutory requirement built into the funding structure.
Planned Parenthood Northern California in Antioch carries both PrEP, the daily medication that prevents HIV acquisition, and PEP as standing clinical offerings, with prescribing, coverage navigation for uninsured patients, and ongoing PrEP monitoring handled at the same location rather than requiring a separate infectious disease provider.
Languages
English, Interpretation Services Available for Non-English Languages, Spanish
Tests offered
Serves
Care services
Prevention services
Fees & payment
Listing verified Jul 2025 · Source: CDC NPIN
La Clinica Pittsburg - Medical, in Pittsburg, carries federal qualification as a community health center, which means STI screening for syphilis, gonorrhea, and chlamydia is available on a sliding-scale fee tied to income, so out-of-pocket cost adjusts to what each patient can actually pay.
Tests offered
Fees & payment
Free tool · not a clinic
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 |
|---|---|---|
| Chlamydia | 7 days after exposure | 14 days after exposure |
| Gonorrhea | 7 days after exposure | 14 days after exposure |
| Trichomoniasis | 7 days after exposure | 28 days after exposure |
| HIV (NAT / RNA) | 10 days after exposure | 33 days after exposure |
| HIV (4th-gen Ag/Ab) | 18 days after exposure | 45 days after exposure |
| HIV (antibody) | 21 days after exposure | 84 days after exposure |
| Syphilis | 21 days after exposure | 42 days after exposure |
| Hepatitis B | 21 days after exposure | 42 days after exposure |
| Hepatitis C | 56 days after exposure | 77 days after exposure |
| Herpes (HSV) | 28 days after exposure | 112 days after exposure |
Guidance only, confirm timing with a clinician. A negative result before the conclusive date may need a repeat test.
Typical out-of-pocket ranges by option, actual cost depends on which tests you need.
Public / community clinic
Free HIV testing is common
Private lab (self-pay)
Never billed to insurance
At-home kit
Mailed to your door, private
Doctor / urgent care
Often $0 preventive with insurance
No centers match those filters. Clear the service-type filter or the opening-hours filters to see every center.
Every other option
Beyond the dedicated testing centers above: at-home kits by mail, hospital labs certified for STI testing, local clinicians who can order a panel during a regular visit, pharmacies for self-test kits and prescriptions, and online PrEP & treatment.
Test from home
The nearest testing center is about 1 mile away; if you'd rather skip the trip, an at-home kit ships to Brentwood, 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 (opens in a new tab) 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.
In-home collection
$79 & up
Best for simplicity & support
$89 & up
Best range: couples & full panels
$79 & up
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.
Also in the area
Beyond the public testing sites above, these federally certified (CLIA) labs serve Contra Costa 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.
1200 Central Blvd Suite D, Brentwood, CA 94513
CMS-certified lab
2221 Balfour Road, Suite A, Brentwood, CA 94513
CMS-certified lab
2540 East Street, Concord, CA 94520
CMS-certified lab Accredited · Joint Commission
Source: CMS CLIA registry (Provider of Services), Q1 2026. Federal public records: active CLIA-certified laboratories near Brentwood. A CLIA certificate records only that a laboratory is federally certified — it does not confirm the site performs STD testing, nor its hours, price or access. Inclusion is not an endorsement; always call to verify.
Local clinicians
Beyond dedicated clinics, 2,047 primary-care, OB-GYN, infectious-disease and other clinicians have a CMS practice record within 30 miles of Brentwood. They may be able to evaluate symptoms or order a confidential STD panel during a regular visit, and 818 offer telehealth.
Ruqaya Fatima, MD Telehealth
Family medicine · 2400 Balfour Road, Brentwood
Linda Obekpa-Agwada, MD Telehealth
Family medicine · 2400 Balfour Road, Brentwood
Yogesh Trehan, MD
Internal medicine · 100 Cortona Way, Brentwood
Kausalya Bhaskarabhatla, MD
Internal medicine · 350 John Muir Parkway, Brentwood
Michele Bergman, MD Telehealth
OB-GYN · 350 John Muir Parkway, Brentwood
Matthew Pecci, MD
Family medicine · 350 John Muir Parkway, Brentwood
These are registry-listed clinicians, not dedicated STD-testing clinics. CMS records do not independently verify current licensure, testing services, availability, price, or new-patient status. Confirm each detail before booking. Source: CMS Doctors & Clinicians.
Nearby pharmacies
No pharmacy near Brentwood, CA publishes an STD-related service or holds a current CLIA testing certificate, so these are simply the closest. Contact a location directly to confirm counter hours, services, prices, and availability before visiting.
0.7 mi 
0.7 mi 
1.2 mi Showing the 3 closest pharmacies to Brentwood, CA.
Directory records identify nearby pharmacies. Service, stock, price, and hours information is shown only when supported by current location-specific evidence.
Prevention & treatment
Testing is one step. For residents of Brentwood, telehealth covers the rest: 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.
Visit from $39
Online STI treatment & DoxyPEP: same-day prescriptions to your pharmacy
From $0 insured
Telehealth PrEP & DoxyPEP with at-home testing and ongoing monitoring
$0 with most insurance
Free online PrEP & DoxyPEP: HIV prevention, home lab kits, no in-person visit
Visit from $0 insured
Telehealth STI treatment and sexual-health care, delivered or to your pharmacy
Pricing varies by insurance and changes often, confirm on the provider's site. These services are not a substitute for emergency care.
STD stats & rates
How reported STI rates in Contra Costa County, the county that includes Brentwood, compare with California and U.S. averages, based on the most recent 2023 surveillance data. An estimated ~23% of residents are aged 15–34 (ACS), the age group with the highest reported chlamydia and gonorrhea rates nationally.
#19 of 58 California counties for chlamydia, a higher rate than 67% of the state
| Infection | Contra Costa County | California | United States |
|---|---|---|---|
| Chlamydia | 427.7 4,940 cases ▼ 13% | 491.1 | 492.2 |
| Gonorrhea | 127.9 1,477 cases ▼ 33% | 190.2 | 179.5 |
| Syphilis (P&S) | 13.2 153 cases ▼ 19% | 16.3 | 15.8 |
| Syphilis (early) | 9 104 cases ▼ 53% | 19.1 | 16 |
| Syphilis (late/unknown) | 22.3 257 cases ▼ 52% | 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. These 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.
Between 2020 and 2023 in Contra Costa County, chlamydia has risen from 386.3 to 427.7 per 100,000 (11%), gonorrhea has fallen from 177.7 to 127.9 per 100,000 (28%), and P&S syphilis has fallen from 15.5 to 13.2 per 100,000 (15%).
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
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 Contra Costa County.
Local HIV snapshot
Contra Costa County HIV care continuum (2023)
Contra Costa County recorded 12.7 new HIV diagnoses per 100,000 (2023), against 14.9 statewide and 13.7 nationally. Among Contra Costa County residents living with HIV, 80.2% are in care · 73.4% 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 a local health department.
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 Contra Costa County tests for syphilis.
Source: CDC NCHHSTP AtlasPlus, 2023 (county-level congenital syphilis is not published).
Local resources & officials
Data & references
Local context
Brentwood skews heavily toward owners rather than renters, roughly three in four households hold a deed here, and that shapes the testing landscape in a quiet but real way. Homeownership at this scale tends to mean longer-term residents, established routines, and households built around families: the average home holds more than three people, and more than half of adults here are married. That's the dominant texture of daily life along Brentwood Boulevard and out toward the Sterling Pinnacle neighborhoods. But woven into that picture is a meaningful share of younger adults (people in their late teens and twenties, early in careers and relationships) for whom STI screening is most consequential and most easily deferred.
Deferral is easier when life is genuinely busy. With nearly two-thirds of residents in the labor force and unemployment running above the state's recent lows, working schedules aren't predictable, and a clinic visit that requires a midday gap or a long drive on CA 4 simply won't happen. Even in a high-income city where over half of households clear six figures, cost matters when rent tops $2,100 a month. The fee-tier and insurance-acceptance details on the clinic cards above are worth a close look before you book.
Getting there
At 7.83/20 on the EPA walkability index, day-to-day errands in Brentwood 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.
ZIP 94513 snapshot
ZIP-level Census figures for the wider 94513 area around Brentwood: a single ZIP can span several communities, so they describe the area, not Brentwood alone.
Brentwood sits in Contra Costa County, ZIP 94513. Local context that shapes where residents test:
Local landmarks
Neighborhoods & communities
Major routes
Nearby cities & towns
Just outside Brentwood? These nearby communities have their own testing guides: clinics, at-home kits, and free screening close to home.
Reference
Everything to know before you test in Contra Costa County: the CDC's screening guidelines, each infection's detection window, per-test reference prices, and your privacy rights under California law. If you have symptoms right now, our confidential symptom checker maps them to the tests worth considering.
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 |
Testing too early can return a false negative, confirm timing with a Brentwood-area provider.
| Infection | Earliest reliable test | Sample |
|---|---|---|
| Chlamydia | 1–2 weeks | Urine or swab |
| Gonorrhea | 1–2 weeks | Urine or swab |
| Trichomoniasis | 1–4 weeks | Urine or swab |
| HIV (NAT / RNA) | 10–33 days | Blood |
| HIV (4th-gen Ag/Ab) | 18–45 days | Blood |
| HIV (antibody) | 3–12 weeks | Blood / oral |
| Syphilis | 3–6 weeks | Blood |
| Hepatitis B | 3–6 weeks | Blood |
| Hepatitis C | 8–11 weeks | Blood |
| Herpes (HSV) | 4–16 weeks (antibody); swab a sore | Blood / swab |
These are the federal Medicare reference prices for processing each lab test. Public clinics and the community health centers serving Brentwood 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 | $26.87 | 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.
Two things that actually depend on California law: who can consent, and whether partners can be treated without their own visit. Everything else about testing privately is the same nationwide (see below).
In California, a minor aged 12 or older can consent to confidential STI testing and treatment on their own, no parental permission is required.
California permits Expedited Partner Therapy (EPT): if you test positive for chlamydia or gonorrhea, your provider can give you medication (or a prescription) to pass to your partner, no separate exam or appointment needed for them.
Keeping a test private works the same in every state. Whether an STD test shows on insurance (the EOB), how to test anonymously, and self-pay options that leave no insurance trail don’t change by location.
Learn more about confidential STD testing in CaliforniaSource: Guttmacher Institute, Minors' Access to STI Services; CDC, Legal Status of Expedited Partner Therapy. General information, not legal advice.
Good to Know
Answers to the questions people ask most before getting tested.
The closest is Quest Diagnostics (1 mi); 12 options are within 30 miles.
Public clinics are free; private labs ~$24–$139, at-home kits $49+.
Public clinics nearby offer free HIV testing.
Local options test for Chlamydia, Gonorrhea, Syphilis, Herpes, Hepatitis A, Hepatitis B, Hepatitis C, Rapid HIV, a full panel covers the common ones.
About 428 cases per 100,000 residents (2023), below the California average.
PrEP (HIV-prevention medicine for HIV-negative people) is available locally, any provider can prescribe it.
In California, people under 18 can consent to confidential STD testing and treatment on their own.
The HPV vaccine guards against the cancer- and wart-causing types; ask a provider if you're still eligible.
No HIV found; just confirm with a retest if you tested soon after a possible exposure.
Public health clinics, family-planning clinics, and many school or campus health centers test teens and young adults, often free.
Have a different question? Browse the full STD & STI FAQ library, every question we answer, in one place.