Mycobacterium tuberculosis complex RNA, qualitative nucleic acid amplification test (specimen: respiratory sample)

How the Test Works

The test uses a specialized probe to detect RNA from TB bacteria. If TB bacteria are present, their genetic material will react with the probe, triggering a positive result. This method is highly sensitive and can detect TB even when traditional tests may not.

What to Expect Before the Test

No special preparation is needed. You may be asked to provide a sample of sputum (phlegm) after coughing deeply into a container, or you might have a procedure to induce sputum production if needed. If you have a respiratory condition, your healthcare provider may guide you on how to prepare.

What to Expect During the Test

The test is typically done in a lab setting. You’ll provide a sample (like sputum), which is then processed and analyzed using a molecular technique. Results are usually available within a few days.

Possible Results and Next Steps

A positive result means the test detected TB RNA, suggesting you may have an active TB infection. A negative result means no TB RNA was found in the sample. Follow-up testing or further evaluation by a healthcare provider may be needed based on your symptoms and clinical picture.