{"id":"urine-barbiturates","name":"Urine Barbiturates Screen","shortName":"Barbiturates (urine)","aliases":["Barbiturates, Urine","BARB","Barbiturate Screen","Barbiturates Screen, Urine","Barbiturate Screen, Urine","Barbiturates","Urine Barbiturate Screen"],"abbreviations":["BARB"],"loinc":[{"code":"19270-8","primary":true},{"code":"70155-7","primary":false},{"code":"70139-1","primary":false},{"code":"3377-9","primary":false}],"specimen":"urine","units":[],"referenceRanges":[],"review":{"status":"ai-verified","label":"AI-verified against cited sources. Awaiting expert review","lastReviewed":"2026-10-03"},"summary":"A urine screen for barbiturates, older sedative medicines such as phenobarbital and butalbital. A first positive is presumptive until a second test confirms it.","url":"https://bloodtesttracker.com/markers/urine-barbiturates","notice":"Information, not medical advice. Ranges differ between labs, so the range on your own report is the one your result is judged against."}