Acid-fast Organism Identification by PCR, MALDI-TOF and/or Sequencing
Also known as: AFB Culture, Identification
Use
This test is used to identify acid-fast bacteria referred from another laboratory that has performed the culture of the clinical sample. Note: PCR testing for identification of M. avium complex and M. tuberculosis complex will be performed on liquid-based broth submissions only. Organisms not identified by PCR will have additional charges for identification by MALDI-TOF and/or nucleic acid sequencing.
Special Instructions
If reflex testing is performed, it may lead to additional charges and CPT codes. The sample should be either isolated acid-fast bacillus (AFB) on agar or egg-based media, or broth system positive for AFB without contamination with non acid-fast bacteria. Specimens should arrive in a screw cap agar-slant tube or bacterial swab transport filled with isolated colonies from a pure culture, or a liquid-based broth tube from BD, bioMerieux or VersaTREK.
Limitations
The test is developed and its performance characteristics determined by Labcorp. It has not been cleared or approved by the Food and Drug Administration, highlighting inherent limitations in regulatory approval which might impact its clinical use outside of research or investigational processes. Results might require additional confirmatory testing depending on the organism identified.
Methodology
Mass Spectrometry
Biomarkers
LOINC Codes
- 88874-3
- 71719-9
- 76346-6
- 75756-7
- 41852-5
- 42803-7
- 42804-5
- 55096-2
- 9825-1
- 98404-7
Result Turnaround Time
15-24 days
Related Documents
For more information, please review the documents below
Specimen
Other
Volume
Entire container
Minimum Volume
Not provided
Container
Screw cap agar-slant tube; bacterial swab transport inoculated with isolated colonies from a pure culture; liquid-based broth tube from BD, bioMerieux or VersaTREK
Storage Instructions
Maintain specimen at room temperature.
Causes for Rejection
Specimen received leaking or in broken transport tube or vial; unlabeled or name discrepancy between specimen and request label; primary clinical specimen received