| Test | Conventional | SI | Threshold |
|---|---|---|---|
| C-Peptide | 0.8-3.1 ng/mL | 0.26-1.03 nmol/L | - |
| Glucose, Fasting | 70-99 mg/dL | 3.9-5.5 mmol/L | < 50 or > 400 mg/dL |
| Glucose, Random | < 140 (non-fasting) mg/dL | < 7.8 mmol/L | < 50 or > 400 mg/dL |
| Hemoglobin A1c (HbA1c) | 4-5.6 % | 20-38 mmol/mol | - |
| Oral Glucose Tolerance Test (2-hour) | < 140 (normal) mg/dL | < 7.8 mmol/L | - |
Panel
Glucose & Diabetes
Fasting and random glucose, HbA1c, the glucose tolerance test, and C-peptide. 5 tests, 2 with a taught threshold.
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Frequently asked questions
What tests are in a Glucose & Diabetes?
The Glucose & Diabetes on this page lists 5 tests: C-Peptide, Glucose, Fasting, Glucose, Random, Hemoglobin A1c (HbA1c), Oral Glucose Tolerance Test (2-hour). Each is shown with its conventional and SI teaching reference range.
What does the Glucose & Diabetes check for?
Fasting and random glucose, HbA1c, the glucose tolerance test, and C-peptide. These are educational teaching values - ranges vary by laboratory and method, and are not for clinical decisions.
Which Glucose & Diabetes values are critical?
2 of the 5 tests in this Glucose & Diabetes carry a taught threshold: Glucose, Fasting (< 50 or > 400 mg/dL); Glucose, Random (< 50 or > 400 mg/dL). These are teaching thresholds, not clinical cutoffs - always use the values your laboratory reports.