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Test Code Billings Clinic: 9321 QuantiFERON-TB Gold Plus-Mycobacterium tuberculosis Infection Determination

Performing Laboratory

Montana Public Health Laboratory, Helena, Montana

Useful For

This assay is an in vitro test for the determination of latent Tuberculosis infection and can be used as an alternative to the TB skin test (PPD).


Enzyme Immunoassay (EIA)

Specimen Requirements

  • Contact the laboratory at 866-232-2522 for special QuantiFERON®-TB Gold Plus Tube Collection Kit prior to drawing specimen.
  • Kit contains 4 collection tubes.

Prepare and transport specimen per instructions in “QuantiFERON-TB Gold Plus-Mycobacterium tuberculosis Infection Determination Collection Instructions" under Resources.

Reference Values



Positive results will be called to the submitter.

Day(s) Test Set Up

Batched Monday, Wednesday and Friday

Test Classification and CPT Coding