{"id":"t-spot-tb","name":"T-SPOT.TB (IGRA result)","shortName":"T-SPOT.TB","aliases":["T-SPOT.TB","T-Spot TB Test","TB T-Spot","Tuberculosis ELISPOT","T-SPOT TB","T-SPOT.TB Test","TSPOT.TB","TSPOT","T-SPOT®.TB","T SPOT","TB T Spot","TB SPOT","Mycobacterium tuberculosis ELISPOT"],"abbreviations":["T-SPOT","TSPOT","T-Spot.TB"],"loinc":[{"code":"74281-7","primary":true},{"code":"71773-6","primary":false},{"code":"74278-3","primary":false},{"code":"74277-5","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":"Counts white blood cells that react to tuberculosis proteins. It shows whether your immune system has met TB bacteria, not whether you are sick.","url":"https://bloodtesttracker.com/markers/t-spot-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."}