AFB Identification and Susceptibility Test

Test Mnemonic


CPT Codes

  • 87118 - QTY (1)
  • 87186 - QTY (1)


9825-1 and 29579-0


  • Acid Fast Bacilli ID and Susceptibility
  • AFB ID and AST
  • AFB ID and Susceptibility
  • Mycobacteria ID and AST
  • Mycobacteria Identification

Performing Laboratory

Cleveland Clinic Laboratories

Specimen Requirements

Volume Type Container Collect Temperature Transport Temperature Special Instructions
UnspecifiedIsolate of organismAgar slant AmbientIndicate on test order: Original date of collection, specimen site, any pertinent preliminary identification information and telephone number including extension where report may be called if necessary. Contraindications: Lack of viability, culture mixed or contaminated. The susceptibility test will not be performed for isolates ifidentified as a species known to always be a contaminant e.g. M. gordonae.


Environmental Condition Description
Ambient2 weeks
Refrigerated1 month

Days Performed

Mon - Fri

Turnaround Time

16 weeks


Name Description
Probe and/or sequencing and/or biochemicals 

Reference Range

Clinical Info

Identification of Mycobacterial species with susceptibility testing if appropriate.