Starting a job in a clinic, hospital, dental office, home health agency, or care facility in Nevada? You will almost certainly be asked for proof of TB screening before your first shift. The details trip people up: which test to take, how many visits it takes, how recent the result must be, and whether you have to repeat it every year.
This guide covers the CDC’s current recommendations and Nevada’s rules in plain language, so you can get cleared without delaying your start date.
Quick answer: U.S. healthcare workers need a baseline TB screening when hired. That means a TB risk assessment, a symptom check, and either a TB blood test (IGRA) or a TB skin test (TST). In Nevada, employees and contractors who provide direct services in medical facilities and similar settings need a TB screening test within the 12 months before they start. Repeat testing depends on the facility’s risk assessment and written policy.
Need a TB test this week? Sahara West Urgent Care & Wellness offers walk-in TB skin testing in Las Vegas, Monday to Friday 9am to 8pm and Saturday 9am to 3pm. Call (702) 248-0554 or book an appointment.
Who Counts as a Healthcare Worker for TB Screening?
The CDC says TB screening programs should include anyone working or volunteering in a healthcare setting. Nevada’s TB program uses the term “healthcare personnel,” which covers employees, independent contractors, and volunteers, paid or unpaid, at covered facilities.
That typically includes:
- Physicians, PAs, nurse practitioners, nurses, and medical assistants
- CNAs, home health aides, and caregivers
- Dental staff and phlebotomists
- EMS personnel
- Front-desk and administrative staff who share clinical space
- Students in clinical rotations and volunteers
Your employer decides exactly who is covered, based on the facility’s risk assessment and written policy.
CDC vs. Nevada: What Is Actually Required?
Two sets of rules apply. The CDC sets national recommendations, which were updated in 2019. Nevada sets legal requirements for certain facilities under NAC 441A.375. The CDC itself notes that its recommendations do not override state regulations.
| CDC recommendation (2019) | Nevada (NAC 441A.375, current text) | |
|---|---|---|
| At hire | Individual TB risk assessment, symptom evaluation, and a TB test (IGRA or TST) if no prior positive | TB screening test within the 12 months before starting, including for people who had the BCG vaccine. Also a physical exam or provider certification that you are free from active TB and other communicable disease |
| Two-step skin test | Use two-step testing if a skin test is used at baseline. Not needed for a blood test | If only step one was completed within the past 12 months, step two (or another single-step test) is required |
| Annual testing | Not recommended without a known exposure or ongoing transmission. Annual TB education for everyone | Annual testing unless the facility’s medical director documents a lower frequency based on risk |
| Prior positive result | No repeat TB test. Symptom evaluation, and chest X-ray as indicated | Chest X-ray (or documentation) within 6 months of starting, then an annual symptom evaluation |
| After a known exposure | Test promptly, then retest about 8 to 10 weeks later if negative | Follow the facility’s exposure protocol |
Nevada health officials have also said that facilities that classify as low or medium risk may consider stopping annual testing. That decision belongs to the facility’s infection control program and needs medical director approval.
Heads-up: Nevada’s State Board of Health scheduled a public hearing on September 11, 2026 on proposed updates to its TB regulations for healthcare personnel, which would align state rules more closely with CDC’s 2019 recommendations. Always confirm the policy that applies on your start date with your employer’s HR or infection control team.
What Does TB Screening Include?
TB screening is more than a test. For healthcare personnel, it has four parts:
- A baseline individual TB risk assessment. A short questionnaire about risk factors such as time spent in high-risk settings or countries, and close contact with someone who has TB.
- A symptom evaluation. Persistent cough, coughing up blood, fever, night sweats, and unexplained weight loss are the red flags.
- A TB test. Either a skin test or a blood test (details below).
- TB education. The CDC recommends annual TB education for all healthcare personnel.
TB Skin Test vs. Blood Test: Which Should You Choose?
Both tests are accepted for healthcare workers. Your employer may specify one.
| TB skin test (TST/PPD) | TB blood test (IGRA) | |
|---|---|---|
| How it works | A small amount of tuberculin is injected under the skin of your forearm | A blood draw analyzed in a lab (for example, QuantiFERON-TB Gold Plus or T-SPOT.TB) |
| Visits | Two: placement, then a reading 48 to 72 hours later | One |
| Two-step needed at hire? | Yes, if the first result is negative | No |
| BCG vaccine effect | Can cause a false positive | Not affected |
| Best for | Quick, routine workplace screening | People with a BCG history, or anyone who cannot return for a reading |
The skin reaction is judged by the size of the firm swelling (induration), measured in millimeters. Redness alone doesn’t count. A trained professional should measure it, and most employers will not accept a self-read.
At Sahara West, TB skin testing is available as part of our work physical and screening services. If your employer requires a blood test (IGRA), call us first so we can confirm availability before you come in.
The Two-Step Skin Test Timeline (Plan Ahead)
The two-step process is the part that surprises new hires, because it takes weeks. The CDC protocol works like this:
- Step one: The first test is placed and read 48 to 72 hours later.
- If negative: A second test is placed 1 to 3 weeks after the first result is read.
- Step two: The second test is read 48 to 72 hours later.
Example: Place step one on Monday and read it Wednesday. The second test then goes in sometime between roughly 7 and 21 days after that reading, and it is read two to three days later. Plan on two to four weeks from start to finish.
Tips to avoid delaying your start date:
- Get tested as soon as you accept the offer, not the week before orientation.
- If you completed step one within the past 12 months, bring that documentation. You may only need step two.
- Ask whether your employer accepts a TB blood test, which skips the two-step wait.
- Plan the reading visit. Because the reading must happen 48 to 72 hours after placement, an early-week placement (Monday to Wednesday) is easiest. Later-week visits can land the reading window on a day we’re closed, so ask our team to help you pick a time.
How Often Do Healthcare Workers Need TB Testing?
- At hire (baseline): Required for nearly all healthcare personnel without a documented prior positive.
- Annually: Depends on your facility. Under Nevada’s current rule, annual testing is the default unless the medical director documents a lower-risk frequency. The CDC does not recommend routine annual testing without exposure, but does recommend annual TB education and, for anyone with untreated latent TB, an annual symptom screen.
- After an exposure: Test promptly, and expect a follow-up test about 8 to 10 weeks later if the first is negative. If the exposure happened on the job, ask about our workers’ compensation evaluation services.
- If symptoms develop: Get evaluated right away. Don’t wait for your next scheduled screening.
What If You’ve Had a Positive Test or the BCG Vaccine?
Prior positive: You generally don’t repeat skin or blood tests. Bring your old results, plus any chest X-ray report. Nevada’s rule calls for a chest X-ray (or documentation of one) within six months of starting, followed by an annual symptom check.
BCG vaccine: Having had the BCG vaccine does not exempt you from screening. A blood test avoids the false-positive risk that BCG can cause with skin tests.
What Happens If Your TB Test Is Positive?
A positive screening test does not mean you have active, contagious TB. Most positives in healthcare workers turn out to be latent TB infection, which is not contagious. The usual next steps:
- Symptom review by a provider.
- A confirmatory test. The CDC advises a second test for lower-risk healthcare personnel with a positive result.
- A chest X-ray to check for active disease. Sahara West offers on-site X-rays on Tuesdays and Thursdays, walk-ins welcome. Call to confirm availability for your situation.
- Treatment discussion. The CDC encourages treatment of latent TB for healthcare personnel unless it’s contraindicated, and Nevada requires that counseling and preventive treatment be offered.
Nevada providers also report TB infection and disease to public health authorities as a routine part of care.
Cough lasting more than three weeks, coughing up blood, fevers, night sweats, or unexplained weight loss? Don’t wait for a screening. Walk in to our urgent care for evaluation.
What Documentation Will Your Employer Want?
Employers typically ask for a clear record, so make sure yours includes:
- Type of test (skin or blood) and the date it was placed or drawn
- For skin tests: the date it was read, the induration in millimeters, and the interpretation
- For two-step testing: both steps documented
- For blood tests: the lab result
- The name, signature, and credentials of the provider who read or reviewed it
- A chest X-ray report, if you have a prior positive
What to bring to your visit:
- Your employer’s TB or health-clearance form
- Photo ID
- Insurance card or payment method
- Any prior TB test results or chest X-ray reports
- Your immunization records, if your employer is also asking for them
Where to Get a TB Test in Las Vegas
Sahara West Urgent Care & Wellness is a walk-in clinic on West Sahara Avenue that handles work physicals and TB skin testing for people who need to meet employment, school, or athletic requirements.
- Walk-ins welcome. No appointment needed.
- Hours: Monday to Friday 9am to 8pm, Saturday 9am to 3pm.
- Address: 6125 West Sahara Avenue, Las Vegas, NV 89146.
- Payment: We accept most major insurance plans and offer self-pay options. See accepted insurances, or ask about our membership plans. Coverage for employment-required screening varies, so check with your employer about reimbursement.
- Language support: Tagalog and Hawaiian-speaking providers are available on-site.
- Convenient for: Las Vegas, Summerlin, and Spring Valley healthcare workers.
Ready to start your TB screening? Call (702) 248-0554 or walk in today. If you also need a general checkup, our primary care team can help, and our guide to what happens during an annual physical explains what to expect.
FAQs
Do all healthcare workers in Nevada need a TB test?
Employees and independent contractors who provide direct services at medical facilities, outpatient facilities, and similar settings need a TB screening test within the 12 months before they start. Your employer determines exactly who is covered.
Is annual TB testing still required for healthcare workers?
The CDC no longer recommends routine annual testing without a known exposure. Nevada’s current rule defaults to annual testing unless the facility’s medical director documents a lower-risk frequency. Follow your employer’s written policy.
How long is a TB test valid for employment?
For Nevada pre-employment purposes, the test must generally fall within the 12 months before you begin work. Individual employers may set stricter windows.
What is a two-step TB skin test?
It is two skin tests given 1 to 3 weeks apart. The first can “boost” your immune response, so a second test helps avoid mistaking a boosted reaction for a new infection. Healthcare workers usually need it at baseline when using a skin test.
How long does the two-step process take?
Plan on two to four weeks. Each test is read 48 to 72 hours after placement, and the second goes in 1 to 3 weeks after the first reading.
Which is better for healthcare workers, the skin test or the blood test?
Both are accepted. A blood test needs one visit and skips the two-step process. It also isn’t affected by a BCG vaccine. Skin tests are common and convenient but require a return visit.
Can I get a TB test without an appointment in Las Vegas?
Yes. Sahara West Urgent Care & Wellness welcomes walk-ins Monday to Friday 9am to 8pm and Saturday 9am to 3pm. Call (702) 248-0554 with questions about the test your employer requires.
Does the BCG vaccine exempt me from TB screening?
No. Nevada’s rule applies to people with a BCG history too. A blood test avoids false positives that BCG can cause with skin tests.
What does a positive TB skin test mean?
It means you’ve likely been exposed to TB bacteria. It does not mean you have active, contagious TB. Your provider will review symptoms, may confirm with a second test, and may order a chest X-ray.
Do students and volunteers need TB screening?
Often, yes. CDC guidance includes volunteers in healthcare settings, and Nevada’s rules reach volunteers and contractors at covered facilities. Clinical programs usually set their own requirements too.
This article is for general information and does not replace guidance from your employer, licensing board, or healthcare provider. TB screening rules change, so confirm requirements with your employer and the Nevada Division of Public and Behavioral Health TB Program.
Don’t let paperwork delay your start date. Call (702) 248-0554 or book an appointment to get your TB screening done at Sahara West.
