Test Catalog

Test ID: CTB    
Mycobacteria and Nocardia Culture, Varies

Useful For Suggests clinical disorders or settings where the test may be helpful

Detection and identification of Mycobacterium species, Nocardia species, and other aerobic actinomycetes


Identification is performed using the Hologic/GenProbe AccuProbes for selected Mycobacterium species, matrix assisted laser desorption ionization-time of flight (MALDI-TOF) mass spectrometry, or 500-base pair 16S rRNA gene sequencing


Mycobacterium tuberculosis complex species identification can be done upon request using rapid polymerase chain-reaction (PCR) targeting the regions of difference (RD) genomic areas

Reflex Tests Lists tests that may or may not be performed, at an additional charge, depending on the result and interpretation of the initial tests.

Test IDReporting NameAvailable SeparatelyAlways Performed
ISMYID by 16S SequencingNo, (Bill Only)No
RMALMId MALDI-TOF Mass Spec AFBNo, (Bill Only)No
RTBSPId, Mtb Speciation, PCRNo, (Bill Only)No
TBMPMycobacteria Probe IdentNo, (Bill Only)No
TBPBMycobacteria Probe Ident BrothNo, (Bill Only)No
TBTConcentration, MycobacteriaNo, (Bill Only)No
TISSRTissue ProcessingNo, (Bill Only)No
LCTBId, MTB complex Rapid PCRNo, (Bill Only)No

Testing Algorithm Delineates situations when tests are added to the initial order. This includes reflex and additional tests.

When this test is ordered, a reflex test may be performed at an additional charge.


The following algorithms are available in Special Instructions:

-Mycobacterium and Nocardia Culture Algorithm

-Meningitis/Encephalitis Panel Algorithm

Special Instructions Library of PDFs including pertinent information and forms related to the test

Method Name A short description of the method used to perform the test

Automated Detection of Positive Cultures followed by Organism Identification/Nucleic Acid Probes/DNA Sequencing/Matrix Assisted Laser Desorption/Ionization Time-of-Flight (MALDI-TOF) Mass Spectrometry

NY State Available Indicates the status of NY State approval and if the test is orderable for NY State clients.


Reporting Name Lists a shorter or abbreviated version of the Published Name for a test

Mycobacterial Culture

Aliases Lists additional common names for a test, as an aid in searching

Acid Fast Bacilli (AFB) Smear
Acid Fast Smear
Bacillus, acid-fast
Culture for TB (Tuberculosis)
Smear, Acid Fast Bacilli-AFB
TB (Tuberculosis) Culture