{"id":"beta-hydroxybutyrate","name":"Beta-Hydroxybutyrate (BHB)","shortName":"BHB","aliases":["Beta-Hydroxybutyrate","3-Hydroxybutyrate","BHB","Ketones, Beta-Hydroxybutyrate","3-HB","BOHB","Ketone, Beta-Hydroxybutyrate","beta-OHB","Beta-Hydroxybutyric Acid","3-Hydroxybutyric Acid","Beta-Hydroxybutyrate, Serum","β-Hydroxybutyrate"],"abbreviations":["BHB","3-HB","BOHB","β-OHB"],"loinc":[{"code":"29512-1","primary":true},{"code":"6873-4","primary":false},{"code":"35255-9","primary":false},{"code":"104816-4","primary":false},{"code":"66441-7","primary":false}],"specimen":"serum-or-plasma","units":[{"ucum":"mmol/L","display":"mmol/L"},{"ucum":"mg/dL","display":"mg/dL"}],"referenceRanges":[{"population":"Adults","low":0.02,"high":0.27,"unit":"mmol/L","unitDisplay":"mmol/L","note":"ARUP Laboratories' adult interval (enzymatic assay) is 0.02 to 0.27 mmol/L, and Labcorp prints the same interval in mg/dL (0.2 to 2.8 mg/dL, fasting, all ages). The ABIM's January 2026 list prints below 0.4 mmol/L, so the upper limit differs between sources and labs, and Quest's test directory lists no interval for this test. Results above this range are common after fasting or on a very low-carbohydrate diet and can be an expected response.","sources":[{"title":"Beta-Hydroxybutyric Acid (test 0080045)","url":"https://ltd.aruplab.com/Tests/Pub/0080045","publisher":"ARUP Laboratories"},{"title":"β-Hydroxybutyrate (test 503610)","url":"https://www.labcorp.com/tests/503610/b-hydroxybutyrate","publisher":"Labcorp"},{"title":"ABIM Laboratory Test Reference Ranges (January 2026)","url":"https://www.abim.org/Media/bfijryql/laboratory-reference-ranges.pdf","publisher":"American Board of Internal Medicine","year":2026}]}],"review":{"status":"ai-verified","label":"AI-verified against cited sources. Awaiting expert review","lastReviewed":"2026-10-03"},"summary":"Beta-hydroxybutyrate (BHB) is the main ketone your body makes when it burns fat for fuel. It rises with fasting, low-carb eating or too little insulin.","url":"https://bloodtesttracker.com/markers/beta-hydroxybutyrate","notice":"Information, not medical advice. Ranges differ between labs, so the range on your own report is the one your result is judged against."}