Yuba County reports about 16 syphilis cases per 100,000 residents, near the US average. If you live in Horstville, California and need testing after exposure or for routine care, you have two main options: walk-in clinics for same-day testing, or labs and at-home kits that let you plan on your schedule. See the list below to identify your best fit.
Available testing centers
7 testing options are listed for Horstville, CA. The nearest, Ampla Health, is about 9.8 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.
Ampla Health in Olivehurst runs on a sliding-scale fee accepted by Medicaid, Medicare, and most insurers, covering gonorrhea, chlamydia, syphilis, rapid and conventional HIV, herpes, hepatitis B, hepatitis C, and TB: all by appointment, with same-visit treatment for bacterial infections, and care fully available in Spanish.
Many clinics field Spanish speakers through patchwork arrangements that still leave gaps at the clinical moment, the exam, the explanation, the treatment decision. At Ampla Health, Spanish is a language of actual care delivery, meaning the conversation about your health happens directly, without an intermediary layer between you and the clinician.
The connection between substance use and STI risk is well established, yet most STI clinics hand you contact information for a separate program and consider the matter closed. Ampla Health carries both services in-house, so a patient navigating both concerns doesn't have to rebuild trust with a second provider from scratch.
For someone without a regular provider, or paying cash and wanting a complete picture in one visit, Ampla Health's panel reaches well beyond the standard four, adding herpes, hepatitis B, and hepatitis C testing alongside HIV, syphilis, gonorrhea, and chlamydia, so gaps don't go undetected simply because a clinic's scope stopped short.
Languages
English, Spanish
Tests offered
Serves
Care services
Prevention services
Fees & payment
Listing verified Oct 2025 · Source: CDC NPIN + HRSA
Harmony Health Medical Clinic and Family Resource Center in Marysville welcomes walk-ins for STI screening, no appointment needed. Federal qualification backs its sliding-scale fees, adjusting costs to income for anyone who walks through the door. A single visit covers syphilis, gonorrhea, and chlamydia testing.
Tests offered
Fees & payment
Yuba County Health and Human Services Department in Marysville takes walk-ins for a full panel (HIV (rapid and conventional), syphilis, gonorrhea, chlamydia, herpes, hepatitis A, B, and C, and TB) with same-visit treatment for bacterial STIs, on a sliding scale, and every service carries no fee.
The zero-fee structure isn't a waiver applied after the fact: it's built into how the clinic is funded and staffed, so hepatitis B treatment, HIV medical care, PrEP prescriptions, and TB treatment are each delivered and managed on-site without a billing step attached to any of them.
Spanish is spoken directly in the exam room, and interpretation for other languages is coordinated at the clinic level: meaning clinical conversations about medication adherence, exposure history, and ongoing HIV or hepatitis management happen in the language the provider and patient actually share, not routed through a secondary layer.
Many STI clinics test and treat but leave HIV prevention prescribing to an outside provider: Yuba County Health and Human Services writes and manages both PrEP and PEP in-house, so the clinical relationship that supports ongoing adherence and monitoring doesn't have to start over somewhere else.
Languages
English, Interpretation Services Available for Non-English Languages, Spanish
Tests offered
Serves
Care services
Prevention services
Fees & payment
Listing verified Apr 2026 · Source: CDC NPIN + HRSA
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 10 miles away; if you'd rather skip the trip, an at-home kit ships to Horstville, 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 range: couples & full panels
$79 & 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 Yuba 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.
726 4th Street, Marysville, CA 95901
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 Horstville. 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, 818 primary-care, OB-GYN, infectious-disease and other clinicians have a CMS practice record within 30 miles of Horstville. They may be able to evaluate symptoms or order a confidential STD panel during a regular visit, and 400 offer telehealth.
Leon Nguyen, DO Telehealth
Family medicine · 2299 River Oaks Boulevard, Plumas Lake
Mary Pena-Pridmore, MD
Family medicine · 4941 Olivehurst Avenue, Olivehurst
Joanabel Sta Maria, MD Telehealth
Family medicine · 1530 3rd Street, Lincoln
Shakeilla Smithbey, MD
Family medicine · 5600 Lindhurst Avenue, Marysville
Benson Chin, MD Telehealth
Family medicine · 5730 Packard Avenue, Marysville
Quinn Li, MD Telehealth
Internal medicine · 841 Sterling Parkway, Lincoln
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 Horstville, 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.
Village Pharmacy
2.0 miPlacerrx Pharmacy
2.4 mi
8.6 mi Olivehurst Drug Store
9.8 miNofel Pharmacy
9.8 miMarios Pharmacy Olivehurst
9.8 miShowing the 6 closest pharmacies to Horstville, 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 Horstville, 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.
$0 with most insurance
Free online PrEP & DoxyPEP: HIV prevention, home lab kits, no in-person visit
From $0 insured
Telehealth PrEP & DoxyPEP with at-home testing and ongoing monitoring
Visit from $39
Online STI treatment & DoxyPEP: same-day prescriptions to your pharmacy
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 Yuba County, the county that includes Horstville, compare with California and U.S. averages, based on the most recent 2023 surveillance data. An estimated ~21% of residents are aged 15–34 (ACS), the age group with the highest reported chlamydia and gonorrhea rates nationally.
#31 of 58 California counties for chlamydia, a higher rate than 47% of the state
| Infection | Yuba County | California | United States |
|---|---|---|---|
| Chlamydia | 324.3 278 cases ▼ 34% | 491.1 | 492.2 |
| Gonorrhea | 108.5 93 cases ▼ 43% | 190.2 | 179.5 |
| Syphilis (P&S) | 16.3 14 cases ≈ the state average | 16.3 | 15.8 |
| Syphilis (early) | 11.7 10 cases ▼ 39% | 19.1 | 16 |
| Syphilis (late/unknown) | 49 42 cases ▲ 5% | 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 Yuba County, chlamydia has fallen from 360.4 to 324.3 per 100,000 (10%), gonorrhea has fallen from 240.3 to 108.5 per 100,000 (55%), and P&S syphilis has fallen from 77.2 to 16.3 per 100,000 (79%).
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 Yuba County.
Local HIV snapshot
Yuba County HIV care continuum (2023)
Yuba County recorded 7.2 new HIV diagnoses per 100,000 (2023), against 14.9 statewide and 13.7 nationally. Among Yuba County residents living with HIV, 79% are in care · 44.8% 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 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 Yuba County tests for syphilis.
Source: CDC NCHHSTP AtlasPlus, 2023 (county-level congenital syphilis is not published).
Local resources & officials
Data & references
Local context
Along CA 65 where D Street cuts through town, a meaningful share of Horstville's younger adults are navigating the early chapters of renting. Juggling $1,350 monthly payments while the majority of their neighbors have already settled into ownership. That split matters: renters in their late teens and twenties tend to move more often, form new relationships more fluidly, and often feel less rooted in a single provider or clinic network, which makes low-barrier screening genuinely useful rather than merely convenient. Horstville's household profile reinforces this. Nearly half of adults here are married, average household size runs close to three people, and about a third of households have crossed into six-figure income territory.
A community with real financial footing in places, yet with unemployment running high enough that a meaningful share of working-age residents are between paychecks. For that group, a testing visit that costs time and fuel is a real calculation, not an abstract one. Getting to any of the options listed on this page means getting in a car, there's no walking to a clinic from Tom Abe Park or the Highway 65 corridor. Knowing that ahead of time, and choosing the visit deliberately rather than assuming it's a quick errand, is what makes the difference for residents here.
Getting there
At 9.14/20 on the EPA walkability index, day-to-day errands in Horstville 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 95692 snapshot
ZIP-level Census figures for the wider 95692 area around Horstville: a single ZIP can span several communities, so they describe the area, not Horstville alone.
Horstville sits in Yuba County, ZIP 95692. Local context that shapes where residents test:
Local landmarks
Major routes
Nearby cities & towns
Just outside Horstville? 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 Yuba 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 Horstville-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 Horstville 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.
Rocklin, CA is a nearby town with options, the listing shows each one's distance so you can pick the closest.
Yes, Medicaid typically covers it.
Public clinics serve people without insurance, often on a sliding scale.
A full panel typically covers chlamydia, gonorrhea, syphilis, HIV, and hepatitis B and C.
Yuba County reported ~324 chlamydia cases per 100,000 in 2023, below the California average.
At-home kits mail to 95692: self-collect, send to the lab, results in ~2–5 days.
In California, people under 18 can consent to confidential STD testing and treatment on their own.
Yes, PrEP, a daily pill that helps prevent HIV in HIV-negative people, is available in the area.
Most results are ready in about 1–2 days.
Get treated, notify partners, pause sex until cleared, and follow up, the infection is manageable.
Have a different question? Browse the full STD & STI FAQ library, every question we answer, in one place.