Syphilis in Charles County runs about 30% lower than the US average. Whether you're considering new relationships or prioritizing ongoing care in Cobb Island, Maryland, you have the option of clinics that may bill insurance, or private labs that often offer a flat self-pay price. Review your options below.
Available testing centers
7 testing options are listed for Cobb Island, MD. The nearest, Guadalupe Free Clinic, is about 7.0 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.
Guadalupe Free Clinic in Colonial Beach charges nothing (no fee, no donation required) for its full STI panel covering HIV (rapid and conventional), syphilis, gonorrhea, chlamydia, hepatitis A, B, and C, plus HPV, hepatitis A, and hepatitis B vaccines. An appointment is required.
Plenty of clinics advertise sliding-scale fees that still leave a number on the invoice. At Guadalupe Free Clinic, the fee for every service (testing, treatment, vaccines) is zero, full stop. Donations are welcomed but never expected or required.
When a clinic can't serve a patient in Spanish, the consequence is a second appointment somewhere else, and STIs don't wait on scheduling gaps. Guadalupe Free Clinic delivers care directly in Spanish, so diagnosis and treatment happen in one visit without that costly detour.
Many free clinics test for the four bacterial and viral STIs and stop there, leaving hepatitis exposure unexamined. Guadalupe Free Clinic tests for hepatitis A, B, and C alongside HIV, syphilis, gonorrhea, and chlamydia, and offers hepatitis A and B vaccines at the same appointment.
Languages
English, Spanish
Tests offered
Serves
Care services
Prevention services
Fees & payment
Listing verified Oct 2025 · Source: CDC NPIN
Greater Baden Medical Services in Leonardtown runs on a sliding scale open to all, accepting Medicaid and most insurance, with appointments required. The standard panel covers HIV, syphilis, gonorrhea, chlamydia, herpes, hepatitis A, B, and C, plus TB. Bacterial infections treated same visit.
Spanish is handled by staff on-site, and interpretation services are available for other languages beyond Spanish: meaning clinical conversations about symptoms, test results, and treatment plans happen in real time, without relay delays or parallel calls running alongside the appointment.
Greater Baden's panel is built to include herpes, hepatitis A, hepatitis B, hepatitis C, and TB alongside gonorrhea, chlamydia, syphilis, and HIV. Each ordered and processed through the same clinic visit, with TB treatment available on-site when indicated.
Languages
English, Interpretation Services Available for Non-English Languages, Spanish
Tests offered
Serves
Care services
Prevention services
Fees & payment
Listing verified Sep 2025 · Source: CDC NPIN + HRSA
Maryland Department of Health in Leonardtown covers herpes, HIV, hepatitis B and C, TB, gonorrhea, chlamydia, and syphilis testing, with same-visit treatment for bacterial STIs and TB. All provided at no charge to every patient, regardless of ability to pay, on a sliding scale.
The clinic runs on a fee structure that sets the cost for every service (testing, treatment, vaccines, partner notification, needle exchange) at nothing. Sliding-scale eligibility is open to all, so the zero-dollar figure isn't conditional on income documentation or insurance status.
Maryland Department of Health in Leonardtown provides care directly in American Sign Language, Spanish, and through interpretation services for other languages, which means clinical conversations (exposure history, treatment instructions, prevention counseling) happen without a communication gap that could distort what a patient walks away understanding.
When a hepatitis C antibody test comes back reactive, treatment begins at the same clinic: prescribing, monitoring, and follow-up are all managed in Leonardtown. That continuity keeps patients in a care relationship with providers who already hold their full testing history.
Languages
American Sign Language, Interpretation Services Available for Non-English Languages, Spanish
Tests offered
Serves
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 7 miles away; if you'd rather skip the trip, an at-home kit ships to Cobb Island, 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 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 Charles 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.
101 Centennial Street #H, La Plata, MD 20646
CMS-certified lab
173 St Patricks Drive Suite 201, Waldorf, MD 20603
CMS-certified lab
3600 Leonardtown Road, Suite 101, Waldorf, MD 20601
CMS-certified lab
Source: CMS CLIA registry (Provider of Services), Q1 2026. Federal public records: active CLIA-certified laboratories near Cobb Island. 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, 339 primary-care, OB-GYN, infectious-disease and other clinicians have a CMS practice record within 30 miles of Cobb Island. They may be able to evaluate symptoms or order a confidential STD panel during a regular visit, and 175 offer telehealth.
Hasan Farkhani, MD
Internal medicine · 525 B Euclid Avenue, Colonial Beach
Joyce Neal, MD
OB-GYN · 23140 Moakley Street, Leonardtown
Kavita Tripathi, MD Telehealth
Family medicine · 25500 Point Lookout Road, Leonardtown
Surabhi Uppal, MD Telehealth
Infectious disease · 25500 Point Lookout Road, Leonardtown
Meenakshi Brewster, MD
Family medicine · 21580 Peabody Street, Leonardtown
Victoria Greenberg, MD
OB-GYN · 41680 Miss Bessie Drive, Leonardtown
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 Cobb Island, MD 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.
6.9 mi McKay's Pharmacy
11 mi
11 mi 
11 mi Showing the 4 closest pharmacies to Cobb Island, MD.
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 Cobb Island, 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
$0 with most insurance
Free online PrEP & DoxyPEP: HIV prevention, home lab kits, no in-person visit
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 Charles County, the county that includes Cobb Island, compare with Maryland and U.S. averages, based on the most recent 2023 surveillance data. An estimated ~19% of residents are aged 15–34 (ACS), the age group with the highest reported chlamydia and gonorrhea rates nationally.
#6 of 24 Maryland counties for chlamydia, a higher rate than 75% of the state
| Infection | Charles County | Maryland | United States |
|---|---|---|---|
| Chlamydia | 557.6 959 cases ▼ 4% | 579.8 | 492.2 |
| Gonorrhea | 190.1 327 cases ▼ 8% | 207.1 | 179.5 |
| Syphilis (P&S) | 11 19 cases ▼ 23% | 14.2 | 15.8 |
| Syphilis (early) | 11 19 cases ▼ 25% | 14.6 | 16 |
| Syphilis (late/unknown) | 13.4 23 cases ▼ 45% | 24.3 | 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 Charles County, chlamydia has fallen from 590 to 557.6 per 100,000 (5%), gonorrhea has risen from 181.9 to 190.1 per 100,000 (5%), and P&S syphilis has fallen from 12.6 to 11 per 100,000 (13%).
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 Charles County.
Local HIV snapshot
Charles County HIV care continuum (2023)
Charles County recorded 9.7 new HIV diagnoses per 100,000 (2023), against 13.9 statewide and 13.7 nationally. Among Charles County residents living with HIV, 79% are in care · 72.8% 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 Charles County tests for syphilis.
Source: CDC NCHHSTP AtlasPlus, 2023 (county-level congenital syphilis is not published).
Local resources & officials
Data & references
Local context
Cobb Island's character runs deep: many households here span generations under one roof, and homeownership stretches back decades for families who've chosen to stay. That stability brings its own rhythm to health decisions. Routine STI screening fits into that rhythm the same way annual checkups do, though the conversation around it often stays quieter. Testing in and around Cobb Island, listed on this page, gives residents a straightforward way to handle screening without disrupting the fabric of a close-knit place.
Young adults in particular, those in their late teens through thirties, benefit from knowing their status as a baseline, especially when moving between relationships or starting new chapters. Confidentiality here isn't incidental; it's the foundation that lets people get tested without wondering whether word will travel through Woodland Point or Potomac View. A clinic visit or rapid test can happen on a schedule that fits your life, not your neighbors' awareness. Testing serves families too.
Parents managing multigenerational households, couples planning ahead, and individuals living in Idlewood Acres or elsewhere in town can all access screening that's straightforward and private. The clinics and providers available locally understand that health decisions belong to you alone.
Getting there
At 4.56/20 on the EPA walkability index, day-to-day errands in Cobb Island 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 20664 snapshot
ZIP-level Census figures for the wider 20664 area around Cobb Island: a single ZIP can span several communities, so they describe the area, not Cobb Island alone.
Cobb Island sits in Charles County, ZIP 20664. Local context that shapes where residents test:
Local landmarks
Neighborhoods & communities
Nearby cities & towns
Just outside Cobb Island? 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 Charles County: the CDC's screening guidelines, each infection's detection window, per-test reference prices, and your privacy rights under Maryland 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 Cobb Island-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 Cobb Island 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 Maryland 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 Maryland, a minor of any age can consent to confidential STI testing and treatment on their own, no parental permission is required.
Maryland 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 MarylandSource: 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.
Possibly, Leonardtown, MD is close; compare it by distance against Guadalupe Free Clinic.
Public clinics are free; 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 558 cases per 100,000 residents (2023), below the Maryland average.
In Maryland, people under 18 can consent to confidential STD testing and treatment on their own.
Yes, at-home kits ship to 20664; you collect a sample, mail it back, and get results in about 2–5 days.
No HIV found; just confirm with a retest if you tested soon after a possible exposure.
The HPV vaccine guards against the cancer- and wart-causing types; ask a provider if you're still eligible.
Public health clinics, family-planning clinics, and many school or campus health centers test teens and young adults, often free.
Have a different question? Browse the full STD & STI FAQ library, every question we answer, in one place.