Alameda County reports about 27% fewer syphilis cases on average than the U.S. overall. If you need syphilis testing in Union City, California for a one-time concern or regular check-ups, consider your options: public clinics keep costs down, private labs prioritize speed and at-home kits trade a clinic visit for convenience. Check the list below.
Available testing centers
11 testing options are listed for Union City, CA. The nearest, Tiburcio Vasquez Health Center, is about 0.4 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.
Tiburcio Vasquez Health Center in Union City requires an appointment and covers gonorrhea, chlamydia, syphilis, HIV, herpes, hepatitis B, hepatitis C, and TB testing in one visit: with same-visit treatment for bacterial infections, HPV and hepatitis A vaccines, and sliding-scale fees that extend to zero cost.
Sliding-scale fees at most clinics taper to a minimum balance that still requires something out of pocket. At Tiburcio Vasquez Health Center, the scale goes to zero. Every service, from testing through treatment to vaccines, is available at no charge.
Clinical conversations routed through ad-hoc arrangements lose precision at exactly the wrong moments. Tiburcio Vasquez Health Center provides care directly in American Sign Language, Cambodian/Khmer, Spanish, and Tagalog. Each a native-capability service, not a workaround.
Without a regular primary care provider, herpes and hepatitis B and C often go untested simply because no single appointment covers them. Tiburcio Vasquez Health Center's standing panel includes both, so one scheduled visit captures infections that would otherwise require separate referrals and separate appointments.
Languages
American Sign Language, Cambodian/Khmer, Spanish, Tagalog
Tests offered
Serves
Care services
Prevention services
Fees & payment
Listing verified Sep 2025 · Source: CDC NPIN + HRSA
Obria Medical Clinics in Union City tests for gonorrhea, chlamydia, syphilis, HIV, herpes, hepatitis B, and hepatitis C, a panel that goes beyond the standard four, on a sliding-scale fee with insurance and Medicaid accepted, no appointment required.
Languages
English
Tests offered
Serves
Care services
Prevention services
Fees & payment
Listing verified Dec 2025 · Source: CDC NPIN
Wic Program in Union City carries federal health center certification, which ties its STI screening fees directly to patient income through a sliding scale. Walk-in visits are welcome, and the sliding-fee structure covers syphilis, gonorrhea, and chlamydia testing regardless of insurance status.
Tests offered
Fees & payment
A community safety-net federally qualified health center about 3 miles from Union City. Sliding-scale STD testing and care are typical here, call ahead to confirm the exact panel and pricing.
Tests offered
Fees & payment
Fire House Clinic in Hayward carries federal qualification as a community health center, anchoring sliding-scale STI screening for people paying out of pocket, between insurance gaps, or simply watching costs. Fees adjust to income, and walk-ins are welcome for syphilis, gonorrhea, and chlamydia testing.
Tests offered
Fees & payment
Bay Area Community Health in Fremont runs every service (testing for HIV, hepatitis B, hepatitis C, syphilis, gonorrhea, and chlamydia, plus STI treatment, PrEP, and vaccines) at no charge, with sliding-scale fees and Medicaid and insurance accepted; appointments are required.
When a cost barrier interrupts care (a bill that delays treatment, a fee that postpones a follow-up) an STI goes unmanaged longer than it should. Bay Area Community Health charges nothing for any of its services, so the gap between a positive result and treated infection is clinical, not financial.
Many clinics handle non-English speakers through an interpretation line that sits between patient and provider. Bay Area Community Health offers Spanish directly alongside broader interpretation services, so the clinical conversation (history, diagnosis, treatment options) happens without a third voice relaying it.
DoxyPEP, doxycycline taken after a sexual exposure to cut bacterial STI risk, is available at Bay Area Community Health alongside both PrEP and PEP, giving patients access to the full current prevention toolkit in one place. Coverage for uninsured patients extends to PrEP specifically, removing cost as a barrier to the most sustained option.
Languages
English, Interpretation Services Available for Non-English Languages, Spanish
Tests offered
Serves
Care services
Prevention services
Fees & payment
Listing verified Nov 2025 · Source: CDC NPIN + HRSA
Mowry III Health Clinic in Fremont carries federally qualified health center standing, which means STI screening (syphilis, gonorrhea, and chlamydia) is priced on a sliding scale tied to what each patient actually earns. No appointment is needed to walk in and get tested.
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 less than a mile away; if you'd rather skip the trip, an at-home kit ships to Union City, 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 value: single tests
$49 & 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 Alameda 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.
3200 Whipple Road, Union City, CA 94587
CMS-certified lab Accredited · College of American Pathologists
25495 Whitesell Street, Hayward, CA 94545
CMS-certified lab Accredited · College of American Pathologists
965 Atlantic Avenue, Alameda, CA 94501
CMS-certified lab Accredited · College of American Pathologists
Source: CMS CLIA registry (Provider of Services), Q1 2026. Federal public records: active CLIA-certified laboratories near Union City. 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, 6,003 primary-care, OB-GYN, infectious-disease and other clinicians have a CMS practice record within 30 miles of Union City. They may be able to evaluate symptoms or order a confidential STD panel during a regular visit, and 2,508 offer telehealth.
Claire Diep, MD Telehealth
Internal medicine · 33509 Western Avenue, Union City
Kenneth Truong, DO Telehealth
Internal medicine · 33509 Western Avenue, Union City
Hanisha Geedipally, MD Telehealth
Internal medicine · 33077 Alvarado Niles Road, Union City
Gabriel Miranda, MD Telehealth
Family medicine · 34167 Fremont Boulevard, Fremont
Apolinar Gacote, MD
Internal medicine · 32270 Alvarado Boulevard, Union City
Ebrahim Ahmadi, MD
Family medicine · 38143 Martha Avenue, Fremont
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 Union City, 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.
New Tiburcio Vasquez Health Center Pharmacy
0.4 mi
0.9 mi 
1.0 mi Entirelypetspharmacy.com
1.0 mi
2.2 mi Showing the 5 closest pharmacies to Union City, 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 Union City, 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
Visit from $0 insured
Telehealth STI treatment and sexual-health care, delivered or to your pharmacy
$0 with most insurance
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.
STD stats & rates
How reported STI rates in Alameda County, the county that includes Union City, compare with California and U.S. averages, based on the most recent 2023 surveillance data. An estimated ~24% of residents are aged 15–34 (ACS), the age group with the highest reported chlamydia and gonorrhea rates nationally.
#17 of 58 California counties for chlamydia, a higher rate than 71% of the state
| Infection | Alameda County | California | United States |
|---|---|---|---|
| Chlamydia | 453.4 7,355 cases ▼ 8% | 491.1 | 492.2 |
| Gonorrhea | 198.8 3,225 cases ▲ 5% | 190.2 | 179.5 |
| Syphilis (P&S) | 11.5 186 cases ▼ 29% | 16.3 | 15.8 |
| Syphilis (early) | 10.3 167 cases ▼ 46% | 19.1 | 16 |
| Syphilis (late/unknown) | 18.9 307 cases ▼ 60% | 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 Alameda County, chlamydia has risen from 432.2 to 453.4 per 100,000 (5%), gonorrhea has fallen from 207.6 to 198.8 per 100,000 (4%), and P&S syphilis has fallen from 12.7 to 11.5 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
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 Alameda County.
Local HIV snapshot
Federal priority area: Alameda County is one of 48 U.S. counties prioritized under the Ending the HIV Epidemic initiative: targeted federal funding to expand local HIV testing, PrEP, and prevention.
Alameda County HIV care continuum (2023)
Alameda County recorded 13.9 new HIV diagnoses per 100,000 (2023), against 14.9 statewide and 13.7 nationally. Among Alameda County residents living with HIV, 90.1% know their status · 80.3% are in care · 73.5% 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 Alameda County tests for syphilis.
Source: CDC NCHHSTP AtlasPlus, 2023 (county-level congenital syphilis is not published).
Local resources & officials
Data & references
Local context
Mission Boulevard threads through the heart of Union City, past Decoto and the quieter residential streets feeding into Contempo, where the typical household runs large and more than half of adults are married. That family structure shapes how health decisions get real: conversations happen across kitchen tables, schedules get stacked around school pickups and dual-earner commutes, and routine appointments like STI screening can drift behind more visible household priorities. With homeownership rates well above the majority, many residents here have deep ties to the community, but stable addresses and long tenures don't make clinic visits automatic.
The share of Union City households clearing six figures is substantial, yet rents that clear two thousand dollars a month leave less budget slack than the income figures imply, and a labor force that's mostly employed still logs long days. For people in their late teens and twenties, that combination, full calendars and real cost pressure, is exactly where screening tends to stall. Alameda County's STI figures carry weight for a city this size, and staying current with testing is how a resident here can know, rather than assume, their own status as those county numbers keep shifting.
Getting there
Union City scores 13.2/20 on the EPA walkability index, so many trips are walkable or a short ride, though a car still gives you the widest choice of testing centers.
Source: EPA National Walkability Index 2021.
ZIP 94587 snapshot
ZIP-level Census figures for the wider 94587 area around Union City: a single ZIP can span several communities, so they describe the area, not Union City alone.
Union City sits in Alameda County, ZIP 94587. Local context that shapes where residents test:
Local landmarks
Neighborhoods & communities
Major routes
Nearby cities & towns
Just outside Union City? 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 Alameda 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 Union City-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 Union City 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.
There are 11 options within a 30-mile drive.
Free at public clinics. Private labs run about $24 for one test and $139 for a full panel; at-home kits are $49+.
Tiburcio Vasquez Health Center, about 0.4 mi away, provides free testing.
A full panel typically covers chlamydia, gonorrhea, syphilis, HIV, and hepatitis B and C.
Alameda County reported ~453 chlamydia cases per 100,000 in 2023, below the California average.
Yes, PrEP, a daily pill that helps prevent HIV in HIV-negative people, is available in the area.
In California, people under 18 can consent to confidential STD testing and treatment on their own.
At-home kits mail to 94587: self-collect, send to the lab, results in ~2–5 days.
A positive means treatment is the next step; many STIs are cured with antibiotics, and all are treatable.
Your results are part of your HIPAA-protected medical record; you can ask any clinic about its own privacy practices.
Have a different question? Browse the full STD & STI FAQ library, every question we answer, in one place.