In El Portal, California, gonorrhea rates in Mariposa County run about 87% lower than the US average. Whether it's your first STI test or routine screening in El Portal, California, you can choose between quick in-person options and the flexibility of lab or at-home kits.
Available testing centers
4 testing options are listed for El Portal, CA. The nearest, Quest Diagnostics, is about 15.8 miles away. Compare private labs and at-home kits below.
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 16 miles away; if you'd rather skip the trip, an at-home kit ships to El Portal, 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 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 Mariposa 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.
5189 Hospital Road, Mariposa, CA 95338
CMS-certified lab
Source: CMS CLIA registry (Provider of Services), Q1 2026. Federal public records: active CLIA-certified laboratories near El Portal. 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, 46 primary-care, OB-GYN, infectious-disease and other clinicians have a CMS practice record within 30 miles of El Portal. They may be able to evaluate symptoms or order a confidential STD panel during a regular visit, and 5 offer telehealth.
Ravinder Kadevari, MD
Family medicine · 5204 Hospital Road, Mariposa, CA
Zohreh Saadabadi, MD
Family medicine · 5189 Hospital Road, Mariposa, CA
Joanna Eveland, MD
Family medicine · 5189 Hospital Road, Mariposa, CA
Tahir Yaqub, MD
Family medicine · 5320 Hwy 49 North, Mariposa, CA
Kelly Sharrar, MD
Family medicine · 4981 Indian Peak Road, Mariposa, CA
Colleen O'Neil-Tennant, MD
Family medicine · 40595 Westlake Drive, Oakhurst, CA
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 El Portal, 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.
16 mi Mother Lode Drug Company
16 miPioneer Market
16 miMariposa Drug
16 mi
25 mi 
25 mi Showing the 6 closest pharmacies to El Portal, 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 El Portal, 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 $0 insured
Telehealth STI treatment and sexual-health care, delivered or to your pharmacy
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
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 Mariposa County, the county that includes El Portal, 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.
#54 of 58 California counties for chlamydia, a higher rate than 7% of the state
| Infection | Mariposa County | California | United States |
|---|---|---|---|
| Chlamydia | 141.9 24 cases ▼ 71% | 491.1 | 492.2 |
| Gonorrhea | 23.6 4 cases ▼ 88% | 190.2 | 179.5 |
| Syphilis (P&S) | 11.8 2 cases ▼ 28% | 16.3 | 15.8 |
| Syphilis (early) | — no data | 19.1 | 16 |
| Syphilis (late/unknown) | 41.4 7 cases ▼ 11% | 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 Mariposa County, chlamydia has fallen from 151.8 to 141.9 per 100,000 (7%), gonorrhea has fallen from 52.5 to 23.6 per 100,000 (55%), and P&S syphilis has risen from 5.8 to 11.8 per 100,000 (103%).
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 Mariposa County.
Local HIV snapshot
Mariposa County HIV care continuum (2023)
Mariposa County recorded 0 new HIV diagnoses per 100,000 (2023), against 14.9 statewide and 13.7 nationally. Among Mariposa County residents living with HIV, 86.7% are in care · 66.7% 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 Mariposa County tests for syphilis.
Source: CDC NCHHSTP AtlasPlus, 2023 (county-level congenital syphilis is not published).
Local resources & officials
Data & references
Local context
El Portal sits along the Central Yosemite Highway with the old Hetch Hetchy Railroad Number 6 marking the town's small footprint, and most people here rent rather than own, often crowded into larger households that share bills and childcare in equal measure. With rents running low compared to the rest of California, money that isn't going toward a mortgage tends to go toward gas, groceries, and the long drives this location demands. Nearly everyone of working age here is employed or looking for work, which means schedules are tight and built around shifts, not around open afternoons.
That kind of household density, paired with a relatively young population, matters for how people here think about sexual health. Younger adults who are still dating, moving in with partners, or building new households benefit most from testing that doesn't require a day off or a long detour, since a single unplanned trip out CA 140 can eat half a day. Given how far the nearest services usually sit from a town this size, planning around fixed clinic hours rather than hoping for a spontaneous stop is what actually works.
For anyone weighing when to go, El Portal Road is the natural starting point: check which direction gets you to a clinic fastest, confirm its hours before you leave, and time the trip around whatever errand already has you driving out that way.
Getting there
At 3.83/20 on the EPA walkability index, day-to-day errands in El Portal 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 95318 snapshot
ZIP-level Census figures for the wider 95318 area around El Portal: a single ZIP can span several communities, so they describe the area, not El Portal alone.
El Portal sits in Mariposa County, ZIP 95318. Local context that shapes where residents test:
Local landmarks
Major routes
Nearby cities & towns
Just outside El Portal? 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 Mariposa 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 El Portal-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 El Portal 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.
Quest Diagnostics, about 15.8 mi away, with 2 options within 30 miles.
Usually yes, it can be billed to insurance, or paid out of pocket at a flat rate.
A full panel typically covers chlamydia, gonorrhea, syphilis, HIV, and hepatitis B and C.
Mariposa County reported ~142 chlamydia cases per 100,000 in 2023, below the California average.
In California, people under 18 can consent to confidential STD testing and treatment on their own.
Yes, site matters; oral/anal exposure needs a throat or rectal swab, which urine testing won't catch.
Reassuring if you tested after the window, just retest if it was early, and screen again with new partners.
Get treated, notify partners, pause sex until cleared, and follow up, the infection is manageable.
A urine test or swab finds trichomoniasis, one of the most treatable STIs.
Herpes isn't curable, but daily or as-needed antiviral medicine controls outbreaks and lowers the chance of passing it on.
Have a different question? Browse the full STD & STI FAQ library, every question we answer, in one place.