Tuberculosis Test Usage and Medical Expenditures from Outpatient Insurance Claims Data, 2013

Figure 1

Estimated claims rates (number/100,000 enrollees) for the TB-specific tests. TB, tuberculosis; NAAP, nucleic acid amplification probe; NADP, nucleic acid direct probe; NAQ, nucleic acid quantification. The brand names for the respective IGRA testing method CPT codes (i.e., QuantiFERON-TB Gold In-Tube [QFT-GIT] for 86480 and T-SPOT.TB [T-Spot] for 86481) were used because they were the only IGRA tests approved by the Food and Drug Administration (FDA) as of 2013 [7].