{"id":"glucose-ogtt-2h","name":"Glucose, OGTT 2-Hour","shortName":"OGTT 2-Hour Glucose","aliases":["Glucose 2 hr (GTT)","2-Hour Plasma Glucose","2hPG","OGTT 2 Hour","Glucose Tolerance 2 Hour","GTT 120 min","2-h PG","2-Hour Post-Load Glucose","Glucose, 2 Hour Post Dose","OGTT 120 min","Glucose Tolerance Test, 2 Hour","Glucose 2 hr post 75 g","Glucose, 120 Minute","Glucose 2 Hour (OGTT)"],"abbreviations":["2hPG","2-h PG","OGTT-2h"],"loinc":[{"code":"1518-0","primary":true},{"code":"14995-5","primary":false},{"code":"1514-9","primary":false},{"code":"14757-9","primary":false}],"specimen":"serum-or-plasma","units":[{"ucum":"mg/dL","display":"mg/dL"},{"ucum":"mmol/L","display":"mmol/L"},{"ucum":"g/L","display":"g/L"}],"referenceRanges":[{"population":"Adults","low":null,"high":139,"unit":"mg/dL","unitDisplay":"mg/dL","note":"Outside pregnancy, 75 g load: a 2-hour value below 140 mg/dL (7.8 mmol/L) is below the range the ADA and IDF call impaired glucose tolerance (140 to 199 mg/dL, 7.8 to 11.0 mmol/L). It is a diagnostic cut point, not a central 95% range of healthy people. No lower limit is set.","sources":[{"title":"2. Diagnosis and Classification of Diabetes: Standards of Care in Diabetes-2026","url":"https://pmc.ncbi.nlm.nih.gov/articles/PMC12690183/","publisher":"American Diabetes Association (Diabetes Care)","year":2026},{"title":"IDF Clinical Practice Recommendations for managing Type 2 Diabetes in Primary Care","url":"https://www.idf.org/media/uploads/2023/05/attachments-63.pdf","publisher":"International Diabetes Federation","year":2017}]}],"review":{"status":"ai-verified","label":"AI-verified against cited sources. Awaiting expert review","lastReviewed":"2026-10-03"},"summary":"Blood glucose two hours after a 75 g sugar drink. It is the main OGTT value used to sort glucose tolerance into normal, prediabetes and diabetes ranges.","url":"https://bloodtesttracker.com/markers/glucose-ogtt-2h","notice":"Information, not medical advice. Ranges differ between labs, so the range on your own report is the one your result is judged against."}