The AFB Stain (ZN Stain) is a specialized microbiology test used to detect Acid Fast Bacilli, particularly Mycobacterium tuberculosis, the bacterium responsible for tuberculosis (TB). Using the Ziehl-Neelsen staining technique, laboratory professionals examine clinical specimens under a microscope to identify acid-fast organisms that retain the primary stain despite acid-alcohol decolorization. This rapid and cost-effective test is commonly performed on sputum, body fluids, pus, tissue samples, and other clinical specimens when tuberculosis or mycobacterial infection is suspected. A positive result supports the diagnosis of TB or related infections, while negative findings may require further evaluation through culture or molecular methods. The AFB Stain remains an essential tool for early tuberculosis detection, treatment monitoring, and infection control programs worldwide.
Fasting
Not Required
Reporting Time
12 Hours
Gender
Male/Female
Age Group
5-99 yrs.
MICROBIOLOGY
- Bacteriology
✔ Home collection available ✔ No hidden charges
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