Quick Reference
- Full form
- Insulin (Serum)
- Sample type
- Blood
- Fasting
- 8 to 10 hours recommended
- Marker measured
- 1
- Report turnaround
- Next day
- Available at
- All locations
About Insulin (Serum)
This test measures how much insulin your pancreas is producing, useful for investigating insulin resistance, certain types of diabetes, or unexplained low blood sugar episodes.
We recommend 8 to 10 hours of fasting before this test for an accurate baseline reading. Results are available the next day.
How to Prepare
- Fasting for 8 to 10 hours is recommended for the most accurate result.
- Water is fine during your fasting window.
Frequently Asked Questions
Should I fast before an insulin test?
Yes, we recommend 8 to 10 hours of fasting for an accurate baseline reading.
What is insulin testing used for?
It helps investigate insulin resistance, certain types of diabetes, or unexplained low blood sugar episodes.
Is this test done with a glucose test?
It is often paired with fasting glucose for a fuller picture of how your body manages blood sugar.
What does high fasting insulin suggest?
It can suggest insulin resistance, where your body needs more insulin than usual to manage blood sugar.
How soon will my report be ready?
Next day.
Is home sample collection available?
Yes, ideal for an early morning fasting sample, in all City Care Lab service areas.
This page provides general health information and is not a substitute for medical advice. Speak with your doctor about your specific results and treatment.