Fasting plasma glucose — lab reference
Normal <100; prediabetes 100-125; diabetes ≥126 on confirmatory testing unless unequivocal hyperglycemia.
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What’s searchable?Random plasma glucose — lab reference
Diabetes may be diagnosed at ≥200 with classic symptoms or hyperglycemic crisis.
2-hour glucose, 75 g OGTT — lab reference
Normal <140; prediabetes 140-199; diabetes ≥200.
Hemoglobin A1C — lab reference
Normal <5.7; prediabetes 5.7-6.4; diabetes ≥6.5. Altered RBC turnover can make A1C unreliable.
Fasting insulin — lab reference
No universal reference or treatment target. Standardize fasting duration and collection time.
Beta-hydroxybutyrate — lab reference
Fasting, ketogenic diets, illness, and diabetes context materially affect interpretation.
Glucose, urine — lab reference
Renal threshold, SGLT2 inhibitors, pregnancy, and hyperglycemia matter.
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