ClarilabDiabetes
Fasting insulin test
Also called insulin, HOMA-IR
Insulin level after fasting; used with glucose to estimate insulin resistance (HOMA-IR).
- Typical range
- About 2–25 µIU/mL (labs vary widely).
- Preparation
- Fast 8–12 hours.
- Usual recheck
- About 6 months when out of range
Why it's done
Often checked in PCOS, weight gain or suspected insulin resistance.
What a high result can mean
Suggests insulin resistance, which can come before type 2 diabetes.
Got a report with Fasting insulin?
Upload the PDF to Clarilab: it reads the values in your browser, flags anything out of range and tracks your results over time.