Description
Why It’s Done:
The TB-PCR test is performed to:
1. Diagnose Active Tuberculosis:
o Confirm the presence of Mycobacterium tuberculosis in patients with symptoms such as persistent cough, weight loss, fever, or night sweats.
2. Detect TB in Difficult Cases:
o Rapidly identify TB in patients with negative or inconclusive results on traditional smear microscopy or culture.
3. Test Extrapulmonary TB:
o Detect TB infection in samples other than sputum, such as CSF for tuberculous meningitis.
4. Guide Early Treatment:
o Provide quick results to start anti-TB therapy promptly, especially in severe or contagious cases.
Preparation:
• Fasting:
o Not required. You may eat and drink normally.
• Sample Collection:
o The type of sample depends on the suspected site of infection (e.g., sputum for pulmonary TB, CSF for meningitis).
o Follow your healthcare provider’s instructions on how to collect the sample properly (e.g., early morning sputum is often preferred).
• Medications:
o Inform your doctor if you are already on anti-tuberculosis treatment, as it may affect test results.
