A 37-year-old woman with HIV from Somalia presents to clinic for evaluation. Shortly after arriving in the United States, she was diagnosed with HIV. She has no symptoms. As part of the initial HIV evaluation, an interferon gamma release assay (IGRA) test—QuantiFERON-TB Gold Plus (QFT-Plus)—is ordered to evaluate for latent tuberculosis infection. The result returns several days later with an "Indeterminate" test result.