Insulin and HOMA index

fasting insulin test · HOMA-IR · insulin resistance test · HOMA index

This is a blood test from a vein. Insulin and blood sugar are measured together. From them, the HOMA index is calculated. It shows how your body responds to insulin.

For extra weight, possible insulin resistance, irregular periods, or high blood sugar.

⏱ Duration: the blood draw takes a few minutes; results usually come in 1 to 2 days

Be sure to tell your doctor

If you have diabetes and what sugar medicines you take
If you take hormones
What other medicines you take regularly

How to prepare

Food. Strictly fasting: usually no food for 8 to 12 hours. Even sweet tea or chewing gum will change the result. Water is fine.
The day before. For 24 hours, no alcohol and no hard workouts. Best not to smoke in the morning.
Medicines. Do not stop them on your own. Tell your doctor what you take. They will decide if anything should change.

What to bring

Your test request form
Your ID

How it goes

You sit down and rest your arm on the armrest
A band is tightened above your elbow
The skin is wiped with antiseptic
A quick prick, and blood fills a tube
The needle comes out, and a cotton pad is pressed on the spot

What you'll feel

A quick prick, like a pinch
Sometimes slight dizziness. Tell the nurse

Afterwards

Press the cotton pad for 3 to 5 minutes and keep your arm straight
You can eat right away and go back to your usual day
Results usually come in 1 to 2 days. The lab will tell you when
The lab or your doctor will calculate the HOMA index

Common questions

Why is insulin tested together with sugar?

The HOMA index uses both numbers. They must come from the same blood sample.

Can I have black coffee before the test?

Better not. Plain water only.