{"id":"apob","name":"Apolipoprotein B (ApoB)","shortName":"ApoB","aliases":["Apolipoprotein B","Apo B","ApoB","Apolipoprotein B-100","Apo B-100","ApoB100","ApoB-100","Apolipoprotein B, Serum","Apolipoprotein B (Apo B)","Apo-B","APO B","Apolipoproteína B","Cardio IQ Apolipoprotein B"],"abbreviations":["ApoB","Apo B","ApoB-100"],"loinc":[{"code":"1884-6","primary":true},{"code":"1871-3","primary":false},{"code":"76482-9","primary":false}],"specimen":"serum-or-plasma","units":[{"ucum":"mg/dL","display":"mg/dL"},{"ucum":"g/L","display":"g/L"}],"referenceRanges":[{"population":"Adults","low":null,"high":89.9,"unit":"mg/dL","unitDisplay":"mg/dL","note":"Adult labs print this as a desirable cutoff (under 90 mg/dL), not as the central 95% of healthy people; it is stored as 89.9 so a result of exactly 90 falls outside it. Labcorp calls 90-99 borderline high, 100-130 high and over 130 very high, and ARUP also lists under 90 mg/dL as desirable. ARUP publishes population-based intervals of 66-133 mg/dL (men) and 60-117 mg/dL (women) on its ApoB/A ratio page; they are wider than the cutoff most reports use, so they are not encoded as separate ranges.","sources":[{"title":"Apolipoprotein B (test 167015)","url":"https://labcorp.com/t/167015","publisher":"Labcorp"},{"title":"Apolipoprotein B (test 0050029)","url":"https://ltd.aruplab.com/Tests/Pub/0050029","publisher":"ARUP Laboratories"},{"title":"Apolipoprotein B/A Ratio (test 0050028)","url":"https://ltd.aruplab.com/Tests/Pub/0050028","publisher":"ARUP Laboratories"}]}],"review":{"status":"ai-draft","label":"AI-drafted. Awaiting verification","lastReviewed":"2026-10-03"},"summary":"ApoB counts the cholesterol-carrying particles that can build up in artery walls, which can add detail beyond your LDL cholesterol number.","url":"https://bloodtesttracker.com/markers/apob","notice":"Information, not medical advice. Ranges differ between labs, so the range on your own report is the one your result is judged against."}