In Lewis County, Washington, gonorrhea cases run about 65% lower than the US average. If you live in Mossyrock, Washington, and need an STI test for a one-time concern or regular check-ups, local clinics may bill insurance or offer sliding-scale fees, while many private labs let you pay a flat fee. Consider what makes the most sense for you.
Available testing centers
7 testing options are listed for Mossyrock, WA. The nearest, Lewis County Hospital District No 1, is about 0.3 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 community safety-net rural health clinic in Mossyrock. Sliding-scale STD testing and care are typical here, call ahead to confirm the exact panel and pricing.
Tests offered
Valley View Health Center - Morton earned its federally qualified designation by committing to serve anyone regardless of insurance status or income. Walk-ins are welcome for sliding-scale STI screening (syphilis, gonorrhea, and chlamydia) with fees adjusted to what each patient can actually pay.
Tests offered
Fees & payment
Valley View Health Center - Onalaska earns its federal FQHC designation partly by anchoring STI care for anyone between providers, paying out of pocket, or simply without coverage. Sliding-scale fees scale to income, and walk-ins can access syphilis, gonorrhea, and chlamydia screening without an appointment.
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 Mossyrock, 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 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 Lewis 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.
521 Adams Street, Morton, WA 98356
CMS-certified lab
914 South Scheuber Road, Centralia, WA 98531
CMS-certified lab
914 South Scheuber Road, Centralia, WA 98531
CMS-certified lab Accredited · Joint Commission
Source: CMS CLIA registry (Provider of Services), Q1 2026. Federal public records: active CLIA-certified laboratories near Mossyrock. 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, 70 primary-care, OB-GYN, infectious-disease and other clinicians have a CMS practice record within 30 miles of Mossyrock. They may be able to evaluate symptoms or order a confidential STD panel during a regular visit, and 10 offer telehealth.
Mark Hansen, MD
Family medicine · 531 Adams Avenue, Morton
Fabiola Puga Duenas, MD
Family medicine · 521 Adams Avenue, Morton
Robert Mcelhaney, MD
Family medicine · 4254 Jackson Highway, Chehalis
Andrew Patel, MD Telehealth
Family medicine · 931 South Market Boulevard, Chehalis
Michael Cook, MD
Family medicine · 2690 Northeast Kresky Avenue, Chehalis
Anthony Reyes, MD
Family medicine · 139 1st Avenue Southwest, Castle Rock
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 Mossyrock, WA 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.
Demarest
10 miValley View Health Center Pharmacy
16 mi
24 mi 
24 mi Chehalis Pharmacy
24 miWilson Medical Consulting
24 miShowing the 6 closest pharmacies to Mossyrock, WA.
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 Mossyrock, 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 $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
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 Lewis County, the county that includes Mossyrock, compare with Washington and U.S. averages, based on the most recent 2023 surveillance data. An estimated ~20% of residents are aged 15–34 (ACS), the age group with the highest reported chlamydia and gonorrhea rates nationally.
#17 of 39 Washington counties for chlamydia, a higher rate than 56% of the state
| Infection | Lewis County | Washington | United States |
|---|---|---|---|
| Chlamydia | 327.3 282 cases ▼ 8% | 354.4 | 492.2 |
| Gonorrhea | 62.7 54 cases ▼ 52% | 129.6 | 179.5 |
| Syphilis (P&S) | 16.2 14 cases ▼ 24% | 21.3 | 15.8 |
| Syphilis (early) | 5.8 5 cases ▼ 54% | 12.5 | 16 |
| Syphilis (late/unknown) | 2.3 2 cases ▼ 90% | 22.9 | 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 Lewis County, chlamydia has fallen from 387.1 to 327.3 per 100,000 (15%), gonorrhea has risen from 60.9 to 62.7 per 100,000 (3%), and P&S syphilis has risen from 7.3 to 16.2 per 100,000 (122%).
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 Lewis County.
Local HIV snapshot
Lewis County HIV care continuum (2023)
Among Lewis County residents living with HIV, 86.3% are in care · 69.9% 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 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 Lewis County tests for syphilis.
Source: CDC NCHHSTP AtlasPlus, 2023 (county-level congenital syphilis is not published).
Local resources & officials
Data & references
Local context
Mossyrock sits quietly beside Mayfield Lake Park, the kind of town where most households own their homes and have for years, but that settled character coexists with real logistical weight when it comes to health care. That threshold lands hardest on younger adults, people in their late teens and twenties who are in the years when STI exposure is most common, in a community where more than half of residents aren't actively in the workforce. A household built around one income, a near-$3,000 average size, and the rhythms of a small town can make a mid-week clinic visit feel like a logistical puzzle rather than a routine errand.
The options listed here include low-cost and sliding-scale sites, which matters in a place where the share of households reaching six figures is genuinely slim. For the roughly one in three residents who rent, often in the lower range that Mossyrock's typical monthly figures reflect, cost-based screening is less a convenience and more a prerequisite, and listed options offer testing at little or no out-of-pocket cost regardless of coverage.
Getting there
At 3.77/20 on the EPA walkability index, day-to-day errands in Mossyrock 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 98564 snapshot
ZIP-level Census figures for the wider 98564 area around Mossyrock: a single ZIP can span several communities, so they describe the area, not Mossyrock alone.
Mossyrock sits in Lewis County, ZIP 98564. Local context that shapes where residents test:
Local landmarks
Nearby cities & towns
Just outside Mossyrock? 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 Lewis County: the CDC's screening guidelines, each infection's detection window, per-test reference prices, and your privacy rights under Washington 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 Mossyrock-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 Mossyrock 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 Washington 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 Washington, a minor of any age can consent to confidential STI testing and treatment on their own, no parental permission is required.
Washington 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 WashingtonSource: 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 Lewis County Hospital District No 1 (0.3 mi); 5 options are within 30 miles.
Private labs ~$24–$139, at-home kits $49+.
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 327 cases per 100,000 residents (2023), below the Washington average.
In Washington, people under 18 can consent to confidential STD testing and treatment on their own.
Lab results typically come back in 1–2 days.
Yes, the CDC recommends STI screening early in pregnancy, since untreated infections can affect the baby.
A clinic offers same-day answers and on-site treatment; an at-home kit trades that for privacy and convenience, both use real lab testing.
Just note your exposure dates and symptoms; for urine tests, hold off urinating ~1 hour before.
Have a different question? Browse the full STD & STI FAQ library, every question we answer, in one place.