Acid-Fast Bacillus (AFB) Culture and AFB Stain with Reflex to Mycobacterium Tuberculosis Complex Detection and Rifampin Resistance by PCR
Ordering Recommendation

Comprehensive panel includes acid-fast bacillus culture and stain; positive smears reflex to PCR amplification of M. tuberculosis complex species and rifampin resistance.

1-62 days
Stain: 24 hours; Final negative after 8 weeks
Positive cultures are reported as soon as detected
New York DOH Approval Status
This test is New York DOH approved.
Submit With Order
ARUP Consult®
Disease Topics
Specimen Required
Patient Preparation
Three sputum specimens should be collected at 8-24 hour intervals (24 hours when possible) and should include at least one first-morning specimen. An individual order must be submitted for each specimen.  
Respiratory specimen.  
Specimen Preparation
Transfer (for each collection) 5-10 mL respiratory specimen to a sterile container. (Min: 1 mL) Place each specimen in an individually sealed bag.  
Storage/Transport Temperature
Unacceptable Conditions
Tissue or specimens other than respiratory (refer to AFB Culture and Stain, ARUP test code 0060152).
Multiple same-site specimens (more than one in 24 hours), dry material, or material collected and transported on a swab.  
Specimen source required.  
Ambient: Unacceptable; Refrigerated: 1 week; Frozen: 2 weeks  
Reference Interval
Culture negative for acid-fast bacilli.
Identification ordered and performed on positives.
Susceptibility performed on all initial isolates of M. tuberculosis complex.
Susceptibility performed on Mycobacterium other than M. tuberculosis complex isolates by request only.
Susceptibility testing of M. gordonae is inappropriate.
Interpretive Data

AFB stain, AFB identification of positives and susceptibility tests are billed separately from culture. Identification of positive culture is billed by individual DNA probes and tests performed. Mycobacterium tuberculosis Complex Detection and Rifampin Resistance by PCR will be performed on AFB stain-positive specimens. Additional charges apply.
CPT Code(s)
87116. CPT codes for identification and susceptibility vary based on method. If reflexed, add 87556; 87798
Component Test Code*Component Chart NameLOINC
0060738Culture, AFB reflex to MTBRIF PCR539-7
* Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, please click the sidebar link to access the Interface Map.
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