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Test Code CSAF Acid-Fast Bacillus (AFB) CSF Culture and Smear AFB Studies, (MTB) Mycobacterium Tuberculosis Culture, (TB) Tuberculosis

Important Note

Order LAB5059

Infectious

Additional Codes

AFB Culture and Stain- LAB877

Performing Laboratory

YRMC Microbiology

Day(s) Test Set Up

Monday through Friday
AFB smears are available Sunday/Saturday upon STAT request.

Specimen Requirements

All specimens must be submitted in a leak-proof container and sealed in a biohazard bag.  Specimens that are received leaking or spilled will be rejected for testing.

Cerebrospinal Fluid Container/Tube:

  • Sterile screw-capped collection container.

Specimen Volume:

  • 1 mL (minimum volume)

Specimen Transport Temperature

Specimen must not be sent through the pneumatic tube system, must be hand carried to the laboratory.

Transport CSF specimens to the laboratory immediately. DO NOT REFRIGERATE.
For all other specimens, transport to the laboratory immediately. If delayed, refrigerate at 2 8°C.

 

Testing Algorithm

Test includes culture and smear.

Methodology

Culture, liquid medium and solid Lowenstein Jensen Medium
Flourescent Acid Fast Bacillus Stain

Reference Values

Negative for AFB at 6 weeks

Specimen Collection Instructions

 1. Label container with patient’s name (first, last, and middle initial), medical record number (if appropriate), date of birth, date and time of collection and collector’s initials and/or ID number
 2. Specimen source is required

Test Classification and CPT Coding

87116 – AFB Culture