{"id":"fit","name":"Fecal Immunochemical Test (FIT)","shortName":"FIT","aliases":["FIT","Fecal Immunochemical Test","iFOBT","Immunochemical Fecal Occult Blood Test","Occult Blood, Fecal, Immunoassay","Stool Occult Blood (FIT)","FOBT Immunochemical","Faecal Immunochemical Test","Fecal Occult Blood","Faecal Occult Blood","FOBT","Stool Occult Blood","Occult Blood, Stool","Guaiac FOBT","gFOBT","Sangre Oculta en Heces","Sangue Oculto nas Fezes","Occult Blood, Fecal, IA","ColoFIT"],"abbreviations":["FIT","iFOBT","FOBT","gFOBT"],"loinc":[{"code":"29771-3","primary":true},{"code":"2335-8","primary":false},{"code":"80372-6","primary":false}],"specimen":"stool","units":[],"referenceRanges":[],"review":{"status":"ai-verified","label":"AI-verified against cited sources. Awaiting expert review","lastReviewed":"2026-10-03"},"summary":"A stool test that looks for tiny amounts of blood you cannot see. It is used in routine bowel cancer checks and when bleeding in the gut is suspected.","url":"https://bloodtesttracker.com/markers/fit","notice":"Information, not medical advice. Ranges differ between labs, so the range on your own report is the one your result is judged against."}