Learn about AFB (Mycobacterial) Culture, its purpose, process, and how it helps in diagnosing tuberculosis and other mycobacterial infections at Diagnopein Diagnostic.
AFB (Acid-Fast Bacilli) or Mycobacterial Culture is a critical test to detect tuberculosis (TB) and other mycobacterial infections. This test helps identify the exact type of bacteria and determine the most effective treatment. Diagnopein Diagnostic provides accurate AFB culture testing with advanced laboratory methods and experienced staff, ensuring timely and reliable results for proper diagnosis and care.
AFB (Acid-Fast Bacilli) or Mycobacterial Culture is a specialized laboratory test used to detect mycobacteria, the bacteria responsible for tuberculosis (TB) and other mycobacterial infections. Unlike regular bacteria, mycobacteria have a unique cell wall that resists conventional staining methods, making AFB culture essential for accurate diagnosis.
Early detection of mycobacteria is crucial for effective treatment and preventing the spread of infections like TB. While tests like sputum microscopy can provide quick results, they may miss some infections. AFB culture is considered the gold standard because it identifies the bacteria and helps determine the most effective antibiotics for treatment.
The procedure is simple but requires specialized laboratory handling:
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1. Culture Method
2. Sample
3. Colony Count
4. Organism(s) Isolated
5. Culture Report: Culture yields growth of
6. Culture isolated after 7 days :
7. Culture isolated after 14 days:
8. Culture isolated after 21 days:
9. Ampicillin
10. Amikacin
11. Amoxicillin clavulanate
12. cefoperazon+sulbactam
13. Cefuroxime
14. Cefepime
15. Cefotaxime
16. Ciprofloxacin
17. Ertapenem
18. Gentamicin
19. Imipenem
20. Meropenem
21. Norfloxacin
22. Nitrofurantoin
23. Piperacillin-tazobactam
24. Trimethoprim-Sulfamethoxazole (Cotrimoxazole)
The test primarily detects tuberculosis (TB) but can also identify other mycobacterial infections, such as non-tuberculous mycobacteria (NTM), which can cause lung infections and skin diseases.
A sample (usually sputum or fluid) is collected from the patient and sent to a lab where it's cultured. It may take several weeks for mycobacteria to grow in the culture, after which they are identified and tested for drug sensitivity.
Since mycobacteria grow slowly, it may take anywhere from 2 to 8 weeks to get conclusive results from an AFB culture.
The AFB culture test is a laboratory test that detects the presence of Mycobacterium tuberculosis and other mycobacteria in samples like sputum, blood, or tissue by growing them in a special culture medium.