In Colusa County, reported chlamydia runs about 49% lower than the US average. Whether it's your first STI test or a routine screening in Grimes, California, you have several testing options to consider: public clinics keep costs down, private labs prioritize speed, and at-home kits trade a clinic visit for convenience. Check the list below to weigh these trade-offs.
Available testing centers
7 testing options are listed for Grimes, CA. The nearest, Ampla Health, is about 9.5 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.
Sliding-scale fees, Medicaid, Medicare, and private insurance all accepted at Ampla Health in Arbuckle, which tests for gonorrhea, chlamydia, syphilis, HIV, herpes, hepatitis B, hepatitis C, and TB. With HPV and hepatitis A vaccines on the same appointment.
Languages
English
Tests offered
Serves
Care services
Prevention services
Fees & payment
Listing verified Oct 2025 · Source: CDC NPIN + HRSA
A public safety-net rural health clinic about 10 miles from Grimes. Sliding-scale STD testing and care are typical here, call ahead to confirm the exact panel and pricing.
Tests offered
A community safety-net rural health clinic about 11 miles from Grimes. Sliding-scale STD testing and care are typical here, call ahead to confirm the exact panel and pricing.
Tests offered
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 Grimes, 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 Colusa 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.
199 East Webster Street, Colusa, CA 95932
CMS-certified lab
Source: CMS CLIA registry (Provider of Services), Q1 2026. Federal public records: active CLIA-certified laboratories near Grimes. 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, 182 primary-care, OB-GYN, infectious-disease and other clinicians have a CMS practice record within 30 miles of Grimes. They may be able to evaluate symptoms or order a confidential STD panel during a regular visit, and 81 offer telehealth.
Jose Molina, MD
Family medicine · 89 Putnam Way, Arbuckle
Jeetinder Sohal, MD
OB-GYN · 173 East Webster Street, Colusa
Harpreet Johl, MD
Family medicine · 3710 Hwy 45, Colusa
Lakshmi Kodey, MD Telehealth
Family medicine · 900 Tharp Road, Yuba City
Richard Brouette
Family medicine · 426 Parkview Avenue, Yuba City
Russell Heckburn, MD
Family medicine · 1275 Tharp Road, Yuba City
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 Grimes, 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.
11 mi Davison Drug & Stationery
11 mi
14 mi 
14 mi Franklin Pharmacy
14 miShowing the 5 closest pharmacies to Grimes, 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 Grimes, 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.
Visit from $0 insured
Telehealth STI treatment and sexual-health care, delivered or to your pharmacy
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
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 Colusa County, the county that includes Grimes, compare with California and U.S. averages, based on the most recent 2023 surveillance data. An estimated ~13% of residents are aged 15–34 (ACS), the age group with the highest reported chlamydia and gonorrhea rates nationally.
#44 of 58 California counties for chlamydia, a higher rate than 24% of the state
| Infection | Colusa County | California | United States |
|---|---|---|---|
| Chlamydia | 249.6 55 cases ▼ 49% | 491.1 | 492.2 |
| Gonorrhea | 49.9 11 cases ▼ 74% | 190.2 | 179.5 |
| Syphilis (P&S) | 18.2 4 cases ▲ 12% | 16.3 | 15.8 |
| Syphilis (early) | 9.1 2 cases ▼ 52% | 19.1 | 16 |
| Syphilis (late/unknown) | 18.2 4 cases ▼ 61% | 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 Colusa County, chlamydia has risen from 238.1 to 249.6 per 100,000 (5%), gonorrhea has fallen from 114.5 to 49.9 per 100,000 (56%), and P&S syphilis has risen from 9.2 to 18.2 per 100,000 (98%).
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 Colusa County.
Local HIV snapshot
Colusa County HIV care continuum (2023)
Among Colusa County residents living with HIV, 85% are in care · 45% 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 Colusa County tests for syphilis.
Source: CDC NCHHSTP AtlasPlus, 2023 (county-level congenital syphilis is not published).
Local resources & officials
Data & references
Local context
Along Little Shrine, families and young professionals navigate the demands of work and daily life. Many residents here are likely juggling multiple responsibilities, with large households and a strong presence of married couples. The area's rental market is a significant aspect of life, with most residents paying a substantial portion of their income to keep a roof over their heads.
The local workforce is marked by a notable level of unemployment, and those who are working are likely putting in considerable hours. With no high-earning households in the area, many residents are making ends meet on modest incomes. For young adults still forming relationships and establishing their careers, finding time for health screenings can be a challenge. In a community where households are often busy and finances are tight, making space for a health check can be a hurdle.
For those living along Little Shrine, getting to a testing site can be a logistical challenge that requires some planning, given the limited options in and around Grimes and the need to travel by car. This reality can make it harder for people to prioritize their health, but being aware of the options listed here can help residents take a proactive step towards their well-being.
Getting there
At 6.71/20 on the EPA walkability index, day-to-day errands in Grimes 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 95950 snapshot
ZIP-level Census figures for the wider 95950 area around Grimes: a single ZIP can span several communities, so they describe the area, not Grimes alone.
Grimes sits in Colusa County, ZIP 95950. Local context that shapes where residents test:
Local landmarks
Nearby cities & towns
Just outside Grimes? 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 Colusa 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 Grimes-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 Grimes 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.
Ampla Health, about 9.5 mi away, with 6 options within 30 miles.
Private labs run about $24 for one test and $139 for a full panel; at-home kits are $49+.
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.
Colusa County reported ~250 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.
Your results are part of your HIPAA-protected medical record; you can ask any clinic about its own privacy practices.
Negative is good news, just retest later if the test was soon after a possible exposure.
Sexually active people, especially under 25 or with new/multiple partners; everyone 13–64 should test for HIV at least once.
Many STIs are fully cured with antibiotics; others, like HIV and herpes, are well managed with treatment.
Have a different question? Browse the full STD & STI FAQ library, every question we answer, in one place.