CTBID - Overview: Culture Referred for Identification, Mycobacterium and Nocardia

Test Catalog

Test Name

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

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

Reflex Tests Lists test(s) that may or may not be performed, at an additional charge, depending on the result and interpretation of the initial test(s)

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

Testing Algorithm Delineates situation(s) 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 and charged. All mycobacteria and Nocardia (including aerobic actinomycetes) submitted will be identified and billed as appropriate.


See Culture Referred for Identification Mycobacterium Algorithm in Special Instructions.

Special Instructions and Forms Describes specimen collection and preparation information, test algorithms, and other information pertinent to test. Also includes pertinent information and consent forms to be used when requesting a particular test

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

Nucleic Acid Probe/16S rDNA Sequencing/MALDI-TOF Mass Spectrometry/Rapid PCR


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

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


Reporting Name A shorter/abbreviated version of the Published Name for a test; an abbreviated test name

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