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Mycobacterial (TB/AFB) smear
Lab code: AFSM
 
Test Synonyms:
Mycobacterial (TB/AFB) smear; Acid fast smear
 
Lab:
Microbiology
Inpatient Req:
Microbiology (#11854)  
Outpatient Req:
Clinical Labs (#83608)  
Specimen:
Important information: The AFB smear will detect both TB and non-tuberculous mycobacteria. This test is NOT performed on urine specimens. For specimens received prior to 12:00 PM on Monday through Saturday, AFB smears are examined on the day of receipt, and are prepared after specimen concentration by centrifugation. Specimens received after 12:00 PM on Saturdays, or any time on Sundays or holidays, will be processed and examined during the following business day. Upon request by calling the Microbiology laboratory (6-3613), a direct (unconcentrated) AFB smear can be prepared and examined on Sundays and holidays, with a 24-hour turnaround time.
Result Time:
24 hours   Cost: $$
Reference Interval:
 
Important Information:
This smear will detect both TB and non-tuberculous mycobacteria. This test is NOT performed on urine specimens.