A positive tuberculosis (TB) skin test means your immune system has encountered the bacteria that cause TB, though it does not automatically mean you have active, contagious sickness. When a trained clinician measures a firm, raised induration at your injection site that meets specific size thresholds, it indicates a past or present immune response to the Mycobacterium tuberculosis organism.
If you receive a positive reading, Sahara West Urgent Care provides comprehensive follow-up guidance and diagnostic evaluations to determine your exact health status.
Latent TB Infection Versus Active TB Disease
A skin test alone cannot distinguish whether the bacteria are dormant or actively multiplying. Your follow-up evaluation will generally categorize your results into one of two states:
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Latent TB Infection (LTBI): You carry inactive bacteria in your body, but you feel completely well, experience no symptoms, and cannot spread the illness to anyone else. The vast majority of people with a positive skin test fall into this category.
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Active TB Disease: The bacteria are actively multiplying and causing illness. Common symptoms include a persistent cough lasting more than three weeks, unexplained weight loss, night sweats, fevers, and fatigue.
The Secondary Diagnostic Process After a Positive Test
To rule out active pulmonary disease and clarify your results, your medical provider will perform additional diagnostic assessments:
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Chest X-Ray: An imaging scan of your lungs is the standard next step to check for any abnormalities or signs of active infection.
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Sputum Sample Testing: If your X-ray shows suspicious spots or you report respiratory symptoms, laboratory analysis of mucus cultures can identify live bacteria.
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Detailed Medical History Review: Evaluating your personal risk factors, recent travel history, or potential workplace exposures.
Treatment Options and Next Steps
Once your diagnosis is confirmed, targeted medical care can protect your long-term health and clear or control the bacteria:
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For Latent Infection: Providers often prescribe a short course of specialized antibiotics (such as isoniazid or rifapentine regimens) spanning 3 to 4 months to prevent the infection from ever activating.
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For Active Disease: A multi-drug antibiotic regimen typically lasting 6 months is prescribed to safely cure the condition and stop transmission.
Why Choose Sahara West Urgent Care for Your Treatment?
Navigating a positive skin test result requires prompt, expert medical interpretation to ensure accurate documentation and peace of mind. At our local urgent care center in Las Vegas, we provide seamless secondary diagnostic referrals, professional evaluations, and clear treatment pathways under one roof.
Need guidance following a tuberculosis screening? Visit us today or book your appointment online to receive expert medical care and comprehensive diagnostic support.
