Specimen Requirements

Title

CULTURE, AFB/TB (ACID FAST BACILLI)

Specimen Requirement

Place specimen in a screw-capped, sterile container and send refrigerated. Send 3 separate sputum samples collected 8-24 hours apart, preferably 24 hours apart.

Note: Specimen Source Is Required On Request Form For Processing. Swabs are unacceptable for AFB.

 

(Test includes stain & smear)

Methodology

Manual Microbiology

Stability

Room Temperature 24 hours; Refrigerated 7 days

Reference Range

By Report*

Turnaround

Negative results available in 42 days; Positive results require additional testing.

Clinical Use

Isolation and identification of mycobacteria, including M. tuberculosis.

Test Code

MAFB