Test Catalog

Test ID: CTBID    
Culture Referred for Identification, Mycobacterium and Nocardia, Varies

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

Rapid identification to the species level for Mycobacterium species, Nocardia species, and other aerobic actinomycete genera and species from pure culture isolates


Nucleic acid probes used for identification, when applicable, include those for Mycobacterium avium-intracellulare complex, Mycobacterium gordonae, and Mycobacterium tuberculosis complex.


Matrix-assisted laser desorption ionization time-of-flight mass spectrometry and/or 16S rDNA sequencing is used for identification, when applicable, for slowly and rapidly growing Mycobacterium species and aerobic actinomycetes (including Nocardia species and Streptomyces species).


The Mycobacterium tuberculosis complex will be further identified to the species level upon request, using rapid polymerase chain reaction testing.

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
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
ISMYID by 16S SequencingNo, (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, the reflex test may be performed at an additional charge. All mycobacteria and Nocardia (including aerobic actinomycetes) submitted will be identified and billed as appropriate.


See Culture Referred for Identification Mycobacterium and Nocardia Algorithm in Special Instructions.

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

Nucleic Acid Probe/16S rDNA Sequencing/Matrix-Assisted Laser Desorption Ionization Time-of-Flight Mass Spectrometry (MALDI-TOF MS)/Rapid PCR

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

Culture Refer for ID, Mycobacterium

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

Acid-Fast Bacilli (AFB)
Aerobic Actinomycetes
Bacillus, Acid-Fast
Culture Referred for Identification, Nocardia (Aerobic Actinomycetes)
Culture Referred for Identification, TB (Tuberculosis)
Culture, TB (Tuberculosis)
Mycobacteria Culture
Mycobacterium tuberculosis (MTB)
Nocardia Referred for Identification
Organism Referred for Identification, Mycobacterium
Organism Referred for Identification, Nocardia (Aerobic Actinomycetes)
Referral for Identification
Tuberculosis (TB)
Tubercle Bacilli: Mycobacterium tuberculosis