Mycobacterial (AFB) Smear AFSM
|Collect||Sputum, fluid, urine or piece of tissue in sterile container. For sputum: first morning deep cough specimen.|
|Transport||2 mL at 20-25ºC.|
|Unacceptable Conditions||Swab specimens are not acceptable for culture.|
|Notes||An Acid Fast Smear without culture is only used for rapid preliminary information and under most circumstances cannot be ordered without an acid fast culture with smear from concentrate. With regard to the disease caused by acid fast organisms, the predictive value of a positive smear result is very high, but the predictive value of a negative smear result is extremely low.|
|Preferred Specimen Collection Device(s)|
No acid fast bacilli seen.