One in Lyon County, Iowa, reported gonorrhea rates run about 86% lower than the US average. If you've had a recent risk or simply test on a regular schedule in Larchwood, Iowa, you can choose between visiting a clinic to ask questions and start treatment, or sending in a sample with an at-home kit collected on your own time. See options on this page.
Available testing centers
7 testing options are listed for Larchwood, IA. The nearest, Sanford Health Laboratories, is about 11.9 miles away. Compare community and public clinics, private labs, and at-home kits below.
South Dakota Department of Health in Sioux Falls tests for HIV, syphilis, gonorrhea, chlamydia, hepatitis A, B, and C, and TB: all at no charge, including free hepatitis B and C testing specifically. Bacterial STIs are treated same visit; appointments are required.
Whether you're paying cash, uninsured, or simply without a regular provider, every test, vaccine, and treatment at South Dakota Department of Health in Sioux Falls carries no charge. TB treatment, DoxyPEP, HPV and hepatitis vaccines. The full scope runs on the same $0 basis.
Many public health clinics handle non-English speakers through external services that fragment the visit. South Dakota Department of Health in Sioux Falls provides interpretation directly, so counseling, test results, and prevention education happen in real time, with the same clinician, not routed through a separate channel.
DoxyPEP, doxycycline taken within 72 hours of potential bacterial STI exposure, is prescribed and managed at South Dakota Department of Health in Sioux Falls, not referred elsewhere. Clinicians handle the prescription, dosing guidance, and follow-up monitoring as part of the standard care workflow.
Languages
English, Interpretation Services Available for Non-English Languages
Tests offered
Serves
Care services
Prevention services
Fees & payment
Listing verified Feb 2026 · Source: CDC NPIN
Sanford Health in Rock Rapids runs STI care by appointment, covering gonorrhea, chlamydia, syphilis, HIV, hepatitis A, B, and C, plus TB. All on a sliding-scale fee accepted through Medicaid and Medicare. Same-visit treatment is available for bacterial infections, and PrEP is prescribed on-site.
Many clinics in small markets test for HIV without offering the medications that prevent it, leaving patients to chase prescriptions elsewhere. Sanford Health in Rock Rapids writes both PrEP and PEP on-site, keeping prevention and primary STI care under the same clinical relationship.
A hepatitis C antibody test that confirms active infection leads directly to curative antiviral treatment, direct-acting antivirals such as sofosbuvir-based regimens, managed at Sanford Health in Rock Rapids rather than routed to an outside specialist. That continuity keeps the treatment timeline intact and the prescribing relationship local.
Beyond gonorrhea, chlamydia, syphilis, and HIV, Sanford Health in Rock Rapids tests for hepatitis A, B, and C and treats all three on-site (hepatitis B and C through monitored antiviral protocols, hepatitis A through vaccination) meaning the panel functions as a complete liver-disease screen alongside standard STI testing.
Languages
English
Tests offered
Serves
Care services
Prevention services
Fees & payment
Listing verified Sep 2025 · Source: CDC NPIN
Avera in Sioux Falls covers gonorrhea, chlamydia, syphilis, hepatitis B and C, and HIV testing with same-visit treatment for bacterial infections when needed; fees run on a sliding scale and insurance is accepted. Appointments are required. Prevention includes PrEP and PEP.
Avera writes PrEP prescriptions and manages PEP directly, so prevention and testing stay with the same clinical team. That continuity means medication adjustments, follow-up labs, and ongoing care happen in one place rather than across separate providers.
When hepatitis C goes untreated, the gap usually opens between a positive result and a specialist who can act on it. A gap that can stretch for months. At Avera in Sioux Falls, treatment is managed on-site, so a diagnosis doesn't sit idle waiting for a second appointment somewhere else.
Avera's panel extends beyond the standard four STIs to include hepatitis B and C testing, the standing capability that matters most for someone paying cash without a primary care physician who would otherwise order those labs. Sliding-scale fees apply to the full panel.
Languages
English
Tests offered
Care services
Prevention services
Fees & payment
Listing verified Apr 2026 · Source: CDC NPIN
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 12 miles away; if you'd rather skip the trip, an at-home kit ships to Larchwood, 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 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 Lyon 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.
916 Holder Street, Larchwood, IA 51241
CMS-certified lab Accredited · COLA
1100 South 10th Avenue, Rock Rapids, IA 51246
CMS-certified lab
Showing the nearest 2 CLIA-certified labs.
Source: CMS CLIA registry (Provider of Services), Q1 2026. Federal public records: active CLIA-certified laboratories near Larchwood. 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, 312 primary-care, OB-GYN, infectious-disease and other clinicians have a CMS practice record within 30 miles of Larchwood. They may be able to evaluate symptoms or order a confidential STD panel during a regular visit, and 39 offer telehealth.
Michael Stotz, DO Telehealth
Family medicine · 916 Holder Street, Larchwood
Michelle Johnson, DO
Family medicine · 300 East Jefferson Street, Inwood
John Jones, MD
Family medicine · 400 North Hiawatha Drive, Canton
Dominique Boudreau Boadwine, MD
OB-GYN · 1600 South Highline Avenue, Sioux Falls
Stuart Andersen, MD Telehealth
Internal medicine · 4513 South Prince Of Peace Place, Sioux Falls
Kevin Smith, DO
Internal medicine · 4500 South Prince Of Peace Place, Sioux Falls
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 Larchwood, IA 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.
Lewis Drug
12 miLewis Express
12 miBrandon Pharmacy
12 mi
12 mi 
13 mi Showing the 5 closest pharmacies to Larchwood, IA.
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 Larchwood, 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
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
From $0 insured
Telehealth PrEP & DoxyPEP with at-home testing and ongoing monitoring
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 Lyon County, the county that includes Larchwood, compare with Iowa and U.S. averages, based on the most recent 2023 surveillance data. An estimated ~33% of residents are aged 15–34 (ACS), the age group with the highest reported chlamydia and gonorrhea rates nationally.
#94 of 99 Iowa counties for chlamydia, a higher rate than 5% of the state
| Infection | Lyon County | Iowa | United States |
|---|---|---|---|
| Chlamydia | 121.7 15 cases ▼ 71% | 426.8 | 492.2 |
| Gonorrhea | 24.3 3 cases ▼ 79% | 116.8 | 179.5 |
| Syphilis (P&S) | — no data | 10.3 | 15.8 |
| Syphilis (early) | — no data | 9.2 | 16 |
| Syphilis (late/unknown) | — no data | 9.9 | 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 Lyon County, chlamydia has fallen from 150.8 to 121.7 per 100,000 (19%), and gonorrhea has risen from 16.8 to 24.3 per 100,000 (45%).
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 Lyon County.
Local HIV snapshot
Lyon County HIV care continuum (2023)
Lyon County recorded 0 new HIV diagnoses per 100,000 (2023), against 5.1 statewide and 13.7 nationally. 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 Lyon County tests for syphilis.
Source: CDC NCHHSTP AtlasPlus, 2023 (county-level congenital syphilis is not published).
Local resources & officials
Data & references
Local context
Larchwood's rhythm centers on work that stays steady through the seasons: farming operations, small trades, the kind of commitment that comes with owning land and building a life in one place. That rootedness shapes how residents approach health decisions too. Young adults here, whether they've grown up locally or moved in for work and family, benefit from confidential STI screening available in and around Larchwood without the friction of a long drive or the worry of running into someone from the high school or the feed store. Clinics and providers listed on this page offer testing that respects both privacy and the reality of small-town life.
Larchwood sits within reach of care that understands the particular weight confidentiality carries when you live where you work and worship. Routine screening (whether you're newly partnered, in a long-term relationship, or checking in after a gap in testing) happens in spaces built for discretion. Results don't circulate through the community grapevine; they stay between you and your provider. The young adult population here, from late teens through their thirties, often has the clearest need for straightforward, judgment-free testing.
Getting screened early and regularly is the kind of practical health habit that fits alongside the longer-term commitments many Larchwood residents make. Testing sites and health providers in the area are ready to support that decision whenever you're ready to make it.
Getting there
At 5.27/20 on the EPA walkability index, day-to-day errands in Larchwood 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 51241 snapshot
ZIP-level Census figures for the wider 51241 area around Larchwood: a single ZIP can span several communities, so they describe the area, not Larchwood alone.
Larchwood sits in Lyon County, ZIP 51241. Local context that shapes where residents test:
Local landmarks
Major routes
Nearby cities & towns
Just outside Larchwood? 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 Lyon County: the CDC's screening guidelines, each infection's detection window, per-test reference prices, and your privacy rights under Iowa 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 Larchwood-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 Larchwood 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 Iowa 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 Iowa, a minor of any age can consent to confidential STI testing and treatment on their own; a parent may be notified only in the case of a positive HIV test result.
Iowa 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 IowaSource: 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 Sanford Health Laboratories (11.9 mi); 7 options are within 30 miles.
Medicaid generally covers STD testing, and public clinics test for free regardless of coverage.
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 122 cases per 100,000 residents (2023), below the Iowa average.
PrEP (HIV-prevention medicine for HIV-negative people) is available locally, any provider can prescribe it.
In Iowa, people under 18 can consent to confidential STD testing and treatment on their own.
You self-collect a sample at home, mail it in, and view results online, no clinic visit needed.
Yes, partners should test and be treated together to avoid passing it back and forth.
It's cured with antibiotics; treating partners together prevents reinfection.
Have a different question? Browse the full STD & STI FAQ library, every question we answer, in one place.