In Humboldt County, there are about 16 syphilis cases per 100,000 residents, near the US average. Whether you're getting tested for the first time in Trinidad, California or it's a routine screening, you can choose from clinics where a provider can answer questions and begin treatment, or at-home kits that let you collect a sample on your own schedule and mail it in. See the options below.
Available testing centers
7 testing options are listed for Trinidad, CA. The nearest, Humboldt Family Medical Care, is about 8.7 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.
A public safety-net rural health clinic about 9 miles from Trinidad. Sliding-scale STD testing and care are typical here, call ahead to confirm the exact panel and pricing.
Tests offered
Open Door Community Health Centers in Mckinleyville tests for gonorrhea, chlamydia, syphilis, HIV, herpes, and hepatitis on a sliding-scale fee, with insurance and Medicaid accepted; bacterial STIs can be treated the same visit, and care is delivered in Spanish.
Plenty of STI clinics cap their panel at gonorrhea, chlamydia, syphilis, and HIV and leave patients to arrange herpes or hepatitis testing elsewhere. Open Door runs all of those in-house (herpes simplex and hepatitis A, B, and C included) so a single appointment covers a genuinely complete picture.
Open Door Community Health Centers carries substance-use treatment as a standing service, not a handoff. Meaning someone managing both concerns can address them at the same practice, with providers who see the full clinical picture rather than one slice of it.
Many clinics patch in language support as an afterthought, a voice on a phone, a stranger on a screen. At Open Door in Mckinleyville, Spanish is a language of direct clinical care, so the conversation about symptoms, history, and treatment happens without an intermediary in the room.
Languages
English, Spanish
Tests offered
Serves
Care services
Prevention services
Fees & payment
Listing verified Apr 2026 · Source: CDC NPIN + HRSA
West End Road Services in Arcata earned its federally qualified health center designation by committing to income-based fees for anyone who walks in: insured, uninsured, or paying cash. Sliding-scale pricing makes syphilis, gonorrhea, and chlamydia screening genuinely reachable for people between providers or navigating tight budgets.
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 9 miles away; if you'd rather skip the trip, an at-home kit ships to Trinidad, 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 Humboldt 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.
535 Airport Road, Hoopa, CA 95546
CMS-certified lab Accredited · Joint Commission
2524 Harrison Avenue, Eureka, CA 95501
CMS-certified lab Accredited · AABB
529 I Street, Eureka, CA 95501
CMS-certified lab
Source: CMS CLIA registry (Provider of Services), Q1 2026. Federal public records: active CLIA-certified laboratories near Trinidad. 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, 71 primary-care, OB-GYN, infectious-disease and other clinicians have a CMS practice record within 30 miles of Trinidad. They may be able to evaluate symptoms or order a confidential STD panel during a regular visit, and 19 offer telehealth.
Eileen Moy, MD Telehealth
Family medicine · 2588 Knox Cove Drive, Mckinleyville
Loretta Mccurtain, NP
Family medicine · 1733 Central Avenue, Mckinleyville
Jonathan Bloch, DO
Family medicine · 1644 Central Avenue, Mckinleyville
Elizabeth Micks, MD
OB-GYN · 3770 Janes Road, Arcata
Ekow Acquah, MD
Internal medicine · 3800 Janes Road, Arcata
Andrew Glatt, MD
Internal medicine · 3800 Janes Road, Arcata
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 Trinidad, 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.
Redwood Community Pharmacy
8.2 miGold Coast Medical Services
8.5 mi
8.7 mi Limas Professional Pharmacy
8.8 miShowing the 4 closest pharmacies to Trinidad, 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 Trinidad, 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.
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
$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 Humboldt County, the county that includes Trinidad, compare with California and U.S. averages, based on the most recent 2023 surveillance data. An estimated ~5% of residents are aged 15–34 (ACS), the age group with the highest reported chlamydia and gonorrhea rates nationally.
#29 of 58 California counties for chlamydia, a higher rate than 50% of the state
| Infection | Humboldt County | California | United States |
|---|---|---|---|
| Chlamydia | 332.9 446 cases ▼ 32% | 491.1 | 492.2 |
| Gonorrhea | 68.7 92 cases ▼ 64% | 190.2 | 179.5 |
| Syphilis (P&S) | 16.4 22 cases ▲ 1% | 16.3 | 15.8 |
| Syphilis (early) | 6.7 9 cases ▼ 65% | 19.1 | 16 |
| Syphilis (late/unknown) | 20.9 28 cases ▼ 55% | 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 Humboldt County, chlamydia has fallen from 395.7 to 332.9 per 100,000 (16%), gonorrhea has fallen from 188.3 to 68.7 per 100,000 (64%), and P&S syphilis has risen from 8.1 to 16.4 per 100,000 (102%).
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 Humboldt County.
Local HIV snapshot
Humboldt County HIV care continuum (2023)
Humboldt County recorded 7.7 new HIV diagnoses per 100,000 (2023), against 14.9 statewide and 13.7 nationally. Among Humboldt County residents living with HIV, 87.4% are in care · 82.3% 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 Humboldt County tests for syphilis.
Source: CDC NCHHSTP AtlasPlus, 2023 (county-level congenital syphilis is not published).
Local resources & officials
Data & references
Local context
US 101, the Redwood Highway, carries Trinidad residents south toward Eureka or north toward Crescent City whenever a clinic visit is on the agenda, because options listed on this page are spread across the surrounding region rather than clustered at the edge of town. That drive is worth planning around, especially given that nearly a third of households here rent at rates that leave little slack in a monthly budget, making free or sliding-scale appointments more than a courtesy. Trinidad's profile is unusually settled for a coastal California community: a majority of adults are married, most households own their homes, and labor-force participation runs well below full employment, which means schedules can be irregular rather than predictably nine-to-five.
The county STI picture makes routine screening a reasonable habit regardless of how stable life looks from the outside. A household of two-and-a-half people on average, with a solid share of dual-income earners, still fits testing into a calendar the same way any other medical appointment does: someone drives up 101, sees a provider, and comes home to Moonstone County Park weather and whatever the day held.
Getting there
At 7.13/20 on the EPA walkability index, day-to-day errands in Trinidad 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 95570 snapshot
ZIP-level Census figures for the wider 95570 area around Trinidad: a single ZIP can span several communities, so they describe the area, not Trinidad alone.
Trinidad sits in Humboldt County, ZIP 95570. Local context that shapes where residents test:
Local landmarks
Major routes
Nearby cities & towns
Just outside Trinidad? 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 Humboldt 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 Trinidad-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 Trinidad 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 5 options within a 30-mile drive.
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.
Humboldt County reported ~333 chlamydia cases per 100,000 in 2023, below the California average.
At-home kits mail to 95570: 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.
Chlamydia is checked with a simple urine sample or a swab; lab results usually come back in a day or two.
Herpes isn't curable, but daily or as-needed antiviral medicine controls outbreaks and lowers the chance of passing it on.
Chlamydia and gonorrhea show up about 1–2 weeks after exposure, syphilis 3–6 weeks, and HIV 2–6 weeks depending on the test.
Have a different question? Browse the full STD & STI FAQ library, every question we answer, in one place.