AFB SMEAR
PILLBOX+
AFB Smear Test (Acid-Fast Bacilli Smear)
The AFB Smear test is a laboratory screening test used to detect acid-fast bacilli, a group of bacteria that includes Mycobacterium tuberculosis, the organism responsible for tuberculosis (TB). The test involves microscopic examination of a stained specimen to quickly identify the presence of these bacteria.
What This Test Detects
-
Presence of acid-fast bacilli in the sample
-
Evidence of tuberculosis or other mycobacterial infections
-
Active infection indicators (screening level)
Why This Test Is Ordered
-
To help diagnose suspected tuberculosis (TB)
-
To evaluate patients with persistent cough, fever, weight loss, or night sweats
-
To monitor infectious status during TB treatment
-
As an initial screening before confirmatory tests such as culture or molecular assays
Sample Required
-
Sputum sample (most common)
Other samples may include bronchial washings or body fluids, as advised by the physician
Preparation & Instructions
-
Sputum is usually collected early in the morning
-
Rinse mouth with water before sample collection (do not use mouthwash)
-
Follow instructions carefully to ensure an adequate specimen
-
Multiple samples may be required on different days for accuracy
Who Should Take This Test
-
Individuals with symptoms suggestive of tuberculosis
-
Patients with abnormal chest X-ray findings
-
People with known exposure to TB
-
Immunocompromised individuals, as advised by a healthcare provider
Turnaround Time
-
Results are typically available within 24 hours