A tuberculosis skin test or blood test is required for millions of Americans every year — for new jobs in healthcare or schools, immigration paperwork, nursing home admission, and contact investigations. If cost is a concern, free and sliding-scale options exist at dozens of location types across all 50 states. This guide tells you exactly where to look, who to call, and what to ask.
People searching for a free TB test are usually under deadline pressure — a job starts Monday, school enrollment paperwork is due, or an employer just handed them a form. These answers cut straight to what matters.
- 1 Where is the single most reliable place to get a free TB test in the U.S.? Your local county or city health department. Public health departments across the country receive federal and state funding specifically to provide TB testing — and for uninsured or low-income residents, the test is typically free or charged on a sliding scale based on income. Hours vary, but most counties have at least a few days per week with TB testing available. Start there before calling anywhere else. Search “[your county name] health department TB testing” or call 211 to be connected to local public health services.
- 2 Do I need an appointment, or can I walk in? It depends on the location — and this is the most important question to ask before driving anywhere. Many county health departments have dedicated TB clinic days that are walk-in only. Others require appointments that can be booked days or even weeks out. Community health centers (FQHCs) often take same-day or next-day appointments. CVS MinuteClinic locations that offer TB tests allow online booking and frequently have same-day availability. Call ahead and specifically ask: “Do you have walk-in TB testing today, and do you also do the return reading visit?”
- 3 I have insurance — does it cover a TB test? Most likely yes, but the billing code matters. When a TB test is done for screening purposes (required by an employer, school, or immigration), it may be coded differently than a clinical visit, which affects your cost share. Before your appointment, call your insurer and ask: “Is a TB skin test or IGRA blood test covered for employment or school screening, and will there be any cost to me?” Many plans cover the test fully as preventive care. Medicare Part B covers TB tests when ordered by a physician. Medicaid covers TB testing in all states.
- 4 The skin test requires two visits — what if I can’t come back in 48–72 hours? Ask about the blood test (IGRA) instead — it requires only one visit. The TB blood test (interferon-gamma release assay, or IGRA) draws a blood sample, sends it to a lab, and results come back in one to three business days. You don’t return for a reading visit. This makes it far more practical for people who work irregular hours, don’t have reliable transportation, or simply can’t plan two separate visits. The CDC now recommends the IGRA blood test as the preferred method for most adults. Ask your provider specifically whether they offer it, because not all locations do — county health departments usually have both options.
- 5 I was born outside the United States and received the BCG vaccine. Can I still get a skin test? You can, but the CDC, American Thoracic Society, and Infectious Diseases Society of America all recommend the blood test (IGRA) instead — and so should most employers and schools. The BCG vaccine, given at birth in many countries, causes false-positive results on the TB skin test. This means a positive reading doesn’t necessarily mean TB infection — it may just be a reaction to the old vaccine. The IGRA blood test uses proteins not found in the BCG vaccine, so it’s far more accurate for BCG-vaccinated individuals. If someone insists you take a skin test and you received BCG, ask them to accept the blood test result instead.
- 6 My employer requires a two-step TB test. What does that mean and where can I get it? A two-step test involves two separate skin tests given one to three weeks apart. It’s required for healthcare workers and others who will be tested periodically on the job. The first test establishes a baseline. Some people who were exposed to TB long ago have a weakened immune response that makes the first test look negative — the second test then “boosts” the response and shows a true positive, preventing it from being mistakenly counted as a new infection later. County health departments and occupational health clinics are the most reliable places for two-step testing because they’re accustomed to tracking both placements and readings on a documented schedule.
- 7 My test came back positive. Does that mean I have tuberculosis? Not necessarily — a positive test means you have been exposed to TB bacteria at some point, not that you have active, contagious tuberculosis disease. Most people with a positive test have latent TB infection (LTBI), which means the bacteria are in the body but inactive and not causing symptoms or spreading. LTBI is treated with a short course of medication to prevent it from ever becoming active disease. A positive result requires follow-up — a chest X-ray and clinical evaluation — to determine whether it’s latent or active. Your county health department handles this follow-up at no cost in most areas.
The locations below are nationally consistent — they exist in or near most communities across all 50 states. Each one has a different cost structure, appointment requirement, and test type availability. Call before you go, because hours and walk-in policies change.
County and city public health departments are the most consistently available source of free TB testing in the United States. Every state has a network of local health departments that receive federal tuberculosis elimination funding — and part of that funding covers testing for residents who can’t afford it. Most health departments offer both the skin test (PPD) and the blood test (IGRA). For residents who are uninsured or who receive SNAP, Medicaid, or other public benefits, the test is typically free. For others, a sliding-scale fee based on household income applies.
The catch to know about upfront: hours for TB-specific clinics are limited at many county health departments. Some counties run TB testing only two or three days a week. Some require appointments; others take walk-ins on specific days. When you call, ask these three questions: “Do you offer free or sliding-scale TB testing for residents? Do I need an appointment or can I walk in? Do you also read results, or do I go somewhere else for the return visit?” Getting those answers in one call saves you two wasted trips.
Federally Qualified Health Centers are community-based clinics funded by the Health Resources and Services Administration (HRSA) under federal law. As of 2026, more than 1,400 FQHC organizations operate over 14,000 sites across all 50 states and U.S. territories. By federal law, FQHCs must serve anyone who walks through the door regardless of insurance status, immigration documentation, or ability to pay. A sliding-scale fee program adjusts the cost based on your household income and size — patients at or below 100% of the federal poverty level typically pay a nominal amount, sometimes as low as $0 to $20 per visit.
FQHCs are especially useful for people who need TB testing as part of broader healthcare — a new patient visit that also includes the test. The HRSA locator at findahealthcenter.hrsa.gov lets you enter your address and immediately see the nearest FQHC with its phone number and hours. Call the center directly to confirm they offer TB testing and whether you need an appointment.
Volunteer-run free clinics operate in most medium and large American cities, staffed by licensed physicians, nurses, and medical professionals who donate their time. These clinics typically serve uninsured adults who don’t qualify for Medicaid and can’t afford regular care. TB testing is a common service at these clinics. The significant limitation is hours — most free clinics operate only a few evenings per week or on weekend mornings. Calling ahead and confirming both availability and their TB testing schedule is essential. The National Association of Free & Charitable Clinics (nafcclinics.org) maintains a searchable directory of clinics nationwide.
The Indian Health Service provides comprehensive healthcare — including TB testing and treatment — at no charge to eligible American Indian and Alaska Native individuals. IHS operates hospitals, health centers, and health stations on or near federally recognized tribal lands across the country. Urban Indian health organizations provide similar services in many cities. TB testing is part of the standard preventive health services offered at IHS facilities. Eligibility is based on tribal membership or Alaska Native status — contact your local IHS facility or tribal health program for specifics.
CVS MinuteClinic locations at many CVS pharmacies across the country offer TB skin tests (PPD). The main advantages are convenience — no appointment required at most locations, extended hours including evenings and weekends, and online booking through minuteclinic.com that shows real-time wait times and same-day slots. Most major insurance plans are accepted, and for people with insurance that covers preventive screenings, the cost is often zero or a small copay. Without insurance, expect to pay roughly $35 to $75 depending on your city and whether the reading visit is bundled or billed separately.
Important detail: the skin test requires two separate visits — one for placement (the injection) and one 48–72 hours later for a clinician to read the result. Check that your local MinuteClinic is available for the reading visit before you schedule the placement, particularly if you need the result by a specific date. Not all MinuteClinic locations offer TB tests — check the website for your specific store before going.
Urgent care centers are a practical middle ground between the free-but-limited county health department and the more expensive primary care office. Many urgent care chains offer TB skin tests as a walk-in service, with most offering same-day availability. Some urgent care centers also offer the IGRA blood test — which is a significant advantage because it requires only one visit instead of two. Call before going to confirm: “Do you offer TB skin testing today? Do you also offer the QuantiFERON or T-SPOT blood test? Do you handle the reading, or do I need to return separately?” Those answers determine whether urgent care is your best same-day option.
If a TB test is required as a condition of employment — particularly in healthcare, education, childcare, food service, corrections, or social services — the employer is typically responsible for covering the cost. Before paying out of pocket anywhere, ask your human resources department: “Who covers the TB test cost for new hires, and where should I go?” Many hospitals and healthcare systems have onsite occupational health clinics that handle all pre-employment testing at no charge to the employee. Similarly, schools, universities, and nursing programs that require TB testing often offer it on-campus at student health services for free or at a minimal fee for enrolled students.
Both tests detect TB infection, but they work differently, cost differently, and have different requirements. Knowing which one you need before you walk in saves time — and sometimes a wasted second trip.
- How it works: A small amount of tuberculin protein is injected just under the skin of your forearm. You must return in exactly 48 to 72 hours — not before, not after — for a clinician to measure any raised bump at the injection site. The size of the bump determines the result.
- Visits required: Two — placement and reading. Missing the reading window means starting over.
- Who it’s best for: Children under 5, people without access to a lab that processes blood tests, and situations where the blood test isn’t offered.
- Limitation: Can produce false-positive results in people vaccinated with BCG (the TB vaccine given at birth in many countries). The CDC recommends the blood test instead for BCG-vaccinated individuals.
- Typical cost without insurance: $35–$100 depending on location, sometimes free at county health departments.
- How it works: A blood sample is drawn, sent to a laboratory, and mixed with proteins that simulate TB bacteria. If your immune system has encountered TB, it releases a measurable interferon-gamma response. Results are reported as positive, negative, or indeterminate (meaning the test needs to be repeated).
- Visits required: One blood draw. Results in 24–72 business hours from the lab.
- Who it’s best for: Adults 5 and older, anyone who received BCG vaccination, anyone who can’t reliably return for a reading visit 48–72 hours later, and healthcare workers whose employers prefer lab-documented results.
- CDC guidance: The CDC, American Thoracic Society, and Infectious Diseases Society of America recommend IGRA blood tests as the preferred method for most adults, and specifically for BCG-vaccinated individuals.
- Typical cost without insurance: $100–$200+ — more expensive than the skin test. Most county health departments and FQHCs offer it; some retail clinics don’t.
Many employers and schools accept either test, but some specify one or the other. Healthcare facilities, for example, increasingly prefer IGRA blood tests because results are more accurate and don’t require a clinician reading visit. Immigration medical exams (required for visa applications) specify the IGRA blood test for individuals 15 and older. Read your requirement form carefully before going anywhere — if it says “QuantiFERON” or “T-SPOT” or “IGRA,” that is the blood test, and not every location offers it. Call ahead and confirm the specific test type before you make the trip.
Compare the key factors at a glance — cost, speed, test types offered, and what you need to bring. Green means an advantage; amber signals something to plan for.
| Location | Typical Cost | Appointment? | Test Types | Handles Follow-Up? | Insurance? |
|---|---|---|---|---|---|
| County Health Dept. Best Free | Free–sliding scale | Call first — varies | Skin + Blood (IGRA) | Yes — full follow-up | Yes |
| FQHC Community Health Center Sliding Scale | $0–$40 sliding scale | Usually needed | Skin + Blood (IGRA) | Yes | Yes — all accepted |
| Free Community Clinic | Free (uninsured) | Limited hours — call | Usually skin test only | Varies | Uninsured only |
| Indian Health Service | Free (eligible members) | Call facility | Skin + Blood (IGRA) | Yes | Eligible members only |
| CVS MinuteClinic Walk-In | $35–$75 self-pay | Walk-in or online | Skin test only | No — refer out | Most plans |
| Urgent Care Center | $40–$100 self-pay | Walk-in | Skin + Blood (some) | Refer out | Most plans |
| Employer / School Health | Free to employee/student | Varies by institution | Skin + Blood (IGRA) | Occupational health | Covered by employer |
Costs approximate and vary by location, county, and insurance status. Always call ahead to confirm test type availability, hours, and pricing before visiting.
The right move depends on your timeline, whether you have insurance, your reason for needing the test, and what your county offers. Here are direct answers for the situations that come up most.
Your fastest options — in order — are: (1) Call your county health department first thing in the morning and ask if they have same-day or next-day walk-in TB testing. Many do on specific days. (2) Book a same-day CVS MinuteClinic appointment online at minuteclinic.com — check for the same-day slot and book it immediately. For the skin test, you’ll need a second visit 48–72 hours later for the result, so plan that before your start date. (3) If the employer accepts the IGRA blood test (one visit, lab results in 1–3 days), an urgent care center that offers it may actually get you results faster than the skin test route. Call the urgent care and ask specifically: “Do you offer QuantiFERON-TB Gold or T-SPOT blood test today?”
Call 211 — this is the national social services helpline, free from any phone — and ask for the nearest county or city health department that offers free TB testing. In most states, your county health department provides TB skin tests at no charge to uninsured residents, regardless of income. If the county health department has a long wait, also ask 211 about the nearest Federally Qualified Health Center (FQHC). FQHCs are required by law to see anyone who walks in and charge on a sliding scale — at the lowest income levels, the fee can be zero. Neither option will turn you away for inability to pay.
Ask specifically for the IGRA blood test, not the skin test. Explain to whoever you’re calling: “I received the BCG vaccine as a child and need the blood test for TB, not the skin test.” The BCG vaccine causes false-positive skin test results in many people, which means you’d test positive on the skin test but not actually be infected with TB — creating unnecessary stress and follow-up appointments. The IGRA blood test is not affected by BCG vaccination and is the test recommended by the CDC for BCG-vaccinated individuals. County health departments and FQHCs have both tests. Make sure the location you choose actually offers the blood test before making the trip.
Take a breath — a positive TB test is not a diagnosis of active tuberculosis disease, and it doesn’t mean you’re contagious. A positive result means your immune system has responded to TB bacteria at some point, which is called latent TB infection (LTBI). Most people with latent TB — an estimated 5–10% over a lifetime according to the CDC — never develop active disease at all. The next step is a chest X-ray and a clinical evaluation, which your county health department will typically arrange at no cost. If the evaluation shows latent infection only, a short course of preventive medication (usually three to four months) is recommended to eliminate any future risk. Your job, your school, and your family are not at risk from latent TB infection — only active TB disease is contagious.
Medicare Part B covers TB risk assessments and testing when ordered by your physician as part of preventive care. If your doctor orders a TB test and it’s billed as a preventive service, you typically pay nothing — no deductible, no copay. The billing must be coded correctly for this to apply. Before your appointment, call your Medicare plan and confirm: “If my doctor orders a TB test for preventive screening, is there any cost to me?” This confirmation also prevents billing surprises. If you receive both Medicare and Medicaid (dual eligible), TB testing is covered under both programs.
Three specific calls and two specific websites cover virtually every situation in every U.S. state. Here’s the exact sequence, with contacts.
Dial 2-1-1 from any phone in the United States. This free national helpline connects you with local health and social services — including your county health department’s TB testing clinic, nearby FQHCs, and free community health clinics. Tell the operator: “I need a free or low-cost TB test in [your city or county]. Can you give me the name and phone number of the nearest location that offers it?” The 211 operator can also tell you whether walk-in testing is available and what hours the clinic runs.
Go to findahealthcenter.hrsa.gov and enter your address or zip code. The HRSA locator shows every federally funded community health center near you — with phone numbers, hours, and services offered. Call the closest one and ask: “Do you offer TB testing? Do I need an appointment? Do you offer the IGRA blood test?” FQHCs are required to serve anyone regardless of insurance status and use a sliding-scale fee. In most areas, several are within a reasonable drive.
The CDC’s National Prevention Information Network (NPIN) maintains a searchable database of clinics offering free TB testing at npin.cdc.gov. Under “Audiences,” select “Persons with TB” and filter by your state. The results show health departments, FQHCs, and community health organizations in your area that specifically offer TB services — many with free testing noted. Click any listing to see contact information and available services.
For walk-in access without the county health department wait: go to minuteclinic.com and search for TB testing locations near you. The site filters specifically for locations that offer TB tests and shows real-time appointment availability. Book online in about two minutes. Separately, calling your own health insurance member services line (the number on the back of your card) and asking “Where is an in-network location for a TB skin test?” will often produce a list of nearby options at the lowest out-of-pocket cost under your specific plan.
Some Walgreens locations with an in-store clinic partner offer TB skin tests — but availability varies significantly by location and clinic partner. Call your specific Walgreens store and ask whether their clinic offers TB skin tests and what the current self-pay price is. Rite Aid closed its in-store clinic operations in most states. The most reliable national pharmacy clinic option remains CVS MinuteClinic, which clearly lists TB test availability by location on its website.
The skin test result is read 48–72 hours after placement. The result form that your employer or school receives is typically considered valid for six months to one year for employment purposes, though some institutions have shorter requirements. Confirm the validity window with whoever is requesting the test — not all employers accept results older than three or six months. The IGRA blood test result is typically reported as valid for one year, though again, check your specific employer’s or school’s requirements.
Yes, in most cases — a two-step TB test involves two separate skin test placements and two separate readings, given one to three weeks apart. At locations that charge per visit, you’ll pay for four total visits (two placements, two readings). At county health departments, this is often still free or low-cost for income-qualifying residents. Occupational health clinics, which are accustomed to two-step testing for healthcare workers, often bundle the cost. When you call ahead, specifically say: “I need a two-step TB test for healthcare employment. Do you offer this, and what is the total cost?”
Yes. County health departments and Federally Qualified Health Centers do not require proof of citizenship or immigration status to provide TB testing and treatment. The CDC, HRSA, and state public health guidelines consistently direct public health departments to provide TB services regardless of immigration status, because tuberculosis control is a public health priority that benefits the entire community. You do not need to provide a Social Security number or show immigration documents to receive a TB test at a county health department or FQHC.
Generally, no. Once you have documented evidence of a prior positive TB skin test or IGRA, repeating the test is not recommended because the result will remain positive for life. What you need instead is your documentation of the prior positive test — a copy of the original result, your chest X-ray report from the follow-up evaluation, and records of any treatment you received for latent TB infection. These documents should be provided to employers or schools in place of a new test. If those records are lost, a repeat blood test (IGRA) is sometimes done — not to get a “new negative,” but to establish documented evidence of your current immune status. Discuss this with your doctor or county health department before retesting.
This page is for general informational purposes only and does not constitute medical advice. TB testing requirements, costs, and available locations change frequently. Always contact the specific facility before visiting to confirm current hours, pricing, and test type availability. For medical questions about TB testing results, diagnosis, or treatment, consult a licensed healthcare provider or contact your county health department. CDC TB information: cdc.gov/tb · HRSA health center locator: findahealthcenter.hrsa.gov · National helpline: 211.