Reported syphilis in Kern County runs about 17% lower than the US average. If you need testing after a possible exposure or as part of routine care in Onyx, California, consider options like going to a clinic or using an at-home kit.
Available testing centers
6 testing options are listed for Onyx, CA. The nearest, Kern Valley Healthcare District, is about 11.6 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.
Review sources
A community safety-net rural health clinic about 12 miles from Onyx. Sliding-scale STD testing and care are typical here, call ahead to confirm the exact panel and pricing.
Tests offered
Review sources
Clinica Sierra Vista in Wofford Heights tests for gonorrhea, chlamydia, syphilis, herpes, and hepatitis C on a sliding-scale fee accepted by Medicaid, Medicare, and most insurers; an appointment is required, and bacterial STIs are treated the same visit. Care is delivered in Spanish.
When a sexual health conversation has to move through an intermediary, nuance drops out. Symptoms get underreported, treatment instructions lose precision, follow-up falls apart. At Clinica Sierra Vista, Spanish-speaking patients work directly with staff in Spanish, so nothing critical gets lost between the question and the answer.
For anyone without a regular provider who needs a complete picture, not just the bacterial basics, Clinica Sierra Vista's panel covers herpes and hepatitis C in addition to gonorrhea, chlamydia, and syphilis. That means one appointment handles conditions that often require a separate specialist visit elsewhere.
Languages
English, Spanish
Tests offered
Serves
Care services
Prevention services
Fees & payment
Listing verified Jul 2025 · Source: CDC NPIN
Review sources
Today's offer: $10 off any test panel, applied automatically at checkout.
Review sources
Today's offer: $10 off any test panel, applied automatically at checkout.
Review sources
Today's offer: $10 off any test panel, applied automatically at checkout.
Review sources
Today's offer: $10 off any test panel, applied automatically at checkout.
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 |
|---|
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. Widen the distance or clear the service-type filter.
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 12 miles away, if you'd rather skip the trip, an at-home kit ships to Onyx, 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.
In-home collection
$79 & up
Best value: single tests
$49 & up
Best for simplicity & support
$89 & 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 Kern 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.
420 34th Street, Bakersfield, CA 93301
CMS-certified lab Accredited · Joint Commission
5001 Commerce Drive, Bakersfield, CA 93309
CMS-certified lab Accredited · Joint Commission
3400 Calloway Drive, Suite 200, Bakersfield, CA 93312
CMS-certified lab
Source: CMS CLIA registry (Provider of Services), Q1 2026. Federal public records: active CLIA-certified laboratories near Onyx. 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.
Nearby pharmacies
Compare the pharmacies closest to Onyx, CA. Contact a location directly to confirm pharmacy-counter hours, services, prices, and product availability before visiting.
Kern Valley Healthcare District
12 miThe Drug Store
13 miLake Isabella Pharmacy
15 mi
16 mi 
31 mi 
31 mi Showing the 6 closest pharmacies to Onyx, 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 Onyx, 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.
Online treatment
Visit from $0 insured
Telehealth STI treatment and sexual-health care, delivered or to your pharmacy
Online treatment
Visit from $39
Online STI treatment & DoxyPEP: same-day prescriptions to your pharmacy
PrEP & DoxyPEP
From $0 insured
Telehealth PrEP & DoxyPEP with at-home testing and ongoing monitoring
PrEP & DoxyPEP
$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 Kern County, the county that includes Onyx, compare with California and U.S. averages, based on the most recent 2023 surveillance data. An estimated ~37% of residents are aged 15–34 (ACS), the age group with the highest reported chlamydia and gonorrhea rates nationally.
#3 of 58 California counties for chlamydia, among the very highest in the state
| Infection | Kern County | California | United States |
|---|---|---|---|
| Chlamydia | 658.8 6,020 cases ▲ 34% | 491.1 | 492.2 |
| Gonorrhea | 159.1 1,454 cases ▼ 16% | 190.2 | 179.5 |
| Syphilis (P&S) | 13.1 120 cases ▼ 20% | 16.3 | 15.8 |
| Syphilis (early) | 11.8 108 cases ▼ 38% | 19.1 | 16 |
| Syphilis (late/unknown) | 296.3 2,708 cases ▲ 534% | 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 Kern County, chlamydia has risen from 584.1 to 658.8 per 100,000 (13%), gonorrhea has fallen from 218.4 to 159.1 per 100,000 (27%), and P&S syphilis has fallen from 24 to 13.1 per 100,000 (45%).
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
Primary-care shortage score 21 / 26
Medically Underserved Area · IMU 46.2
Social Vulnerability Index · 97th 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 Kern County.
Local HIV snapshot
Kern County HIV care continuum (2023)
Kern County recorded 28.9 new HIV diagnoses per 100,000 (2023), against 14.9 statewide and 13.7 nationally. Among Kern County residents living with HIV, 69.1% are in care · 59.2% 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 Kern County tests for syphilis.
Source: CDC NCHHSTP AtlasPlus, 2023 (county-level congenital syphilis is not published).
Editorially Reviewed & Fact-Checked · Updated
Reviewed by EasySTD Editorial Team
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 →
Local resources & officials
Data & references
Local context
Taking charge of your sexual health in Onyx is a responsible and empowering choice. Like many communities, Onyx has younger adults who benefit from accessible, confidential STD testing. This makes it easier to keep track of your sexual health, no matter your relationship status. Some people also appreciate convenient testing options to safeguard their sexual wellness with new partners.
There are helpful resources in and around Onyx to support your health journey in a non-judgmental way. Even if you don’t have symptoms, regular screening is a key part of staying healthy, and is a good idea if you’re sexually active. The best part about getting tested is that you’re taking a big step in caring for your own well-being. Many people find that knowing their status helps them communicate more openly with their partners, too.
If you're curious about where to get tested in Kern, the testing options listed on this page can help. This is a low-friction process by design, and your results remain private and confidential. Getting tested is a normal part of looking after yourself, and it’s as simple as finding a time that works best for you. Younger adults especially are encouraged to make confidential screening a routine part of their healthcare.
Getting there
At 9.95/20 on the EPA walkability index, day-to-day errands in Onyx 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 93255 snapshot
ZIP-level Census figures for the wider 93255 area around Onyx: a single ZIP can span several communities, so they describe the area, not Onyx alone.
Onyx sits in Kern County, ZIP 93255. Local context that shapes where residents test:
Local landmarks
Major routes
Nearby cities & towns
Just outside Onyx? 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 Kern 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 an Onyx-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 Onyx 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 Kern Valley Healthcare District (11.6 mi); 3 options are within 30 miles.
Medicaid generally covers STD testing.
Yes, community and public clinics test the uninsured, with sliding-scale fees.
Local options test for Chlamydia, Gonorrhea, Syphilis, Herpes, Hepatitis A, Hepatitis B, Hepatitis C, Rapid HIV, a full panel covers the common ones.
About 659 cases per 100,000 residents (2023), above the California average.
In California, people under 18 can consent to confidential STD testing and treatment on their own.
HPV is checked through cervical screening (often with a Pap test); there's no routine HPV test for men.
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.
That's a myth; STIs need sexual contact to spread, not surfaces.
Have a different question? Browse the full STD & STI FAQ library, every question we answer, in one place.