Acid-Fast Bacilli (AFB) Smear Examination
Specimens (such as sputum) are pre-treated with NaOH and then concentrated using a centrifuge. The supernatant is discarded, and the concentrated specimen is then applied onto a slide using a pipette. This method has a higher positive detection rate compared to direct smear examination and is crucial for detecting low levels of bacilli in culture tests and other examinations.
| Method |
Concentrated Smear, Fluorescent Staining (Auramine O) 
|
Concentrated Smear, Ziehl-Neelsen Staining 
|
|
|---|---|---|---|
| Reporting (WHO Scale) |
Magnification (FM, 250X) | Interpretation | Magnification (1,000X) |
| 0 / 30 F | Negative(-) | 0 / 100 F | |
| ＜5~49 AFB / 30 F | Scanty | 1~9 AFB / 100F | |
| 3~24 AFB / 30 F | + | 10~99 AFB / 100F | |
| 25~250 AFB / F | ++ | 1~10 AFB / F | |
| ＞250 AFB / F | +++ | ＞10 AFB / F | |
| Insurance Code | D6003001 | D6002001 | |
| Classification Number | 누-600다 | 누-600나 | |
| Turnaround Time | Within 1 day | Within 1 day |
Contact
- Manager TB Diagnosis Team Shin Jae
- Telephone +82 43-249-4945
- Mail rcy3333@knta.or.kr