{"id":"quantiferon-tb","name":"QuantiFERON-TB Gold Plus (IGRA)","shortName":"QuantiFERON TB","aliases":["Quantiferon TB Gold","QuantiFERON-TB Gold Plus","QFT-Plus","TB Gold Plus","QuantiFERON","QuantiFERON-TB Gold Plus, Blood","QuantiFERON-TB Gold Plus (QFT-Plus)","QuantiFERON TB Gold Plus Result","QFT-TB Gold Plus"],"abbreviations":["QFT-Plus","QFT"],"loinc":[{"code":"71773-6","primary":true},{"code":"71775-1","primary":false}],"specimen":"whole-blood","units":[],"referenceRanges":[],"review":{"status":"ai-verified","label":"AI-verified against cited sources. Awaiting expert review","lastReviewed":"2026-10-03"},"summary":"A blood test that shows whether your immune system has reacted to TB bacteria. It cannot tell a dormant infection from active TB disease.","url":"https://bloodtesttracker.com/markers/quantiferon-tb","notice":"Information, not medical advice. Ranges differ between labs, so the range on your own report is the one your result is judged against."}