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Insulin Resistance Test: How Doctors Diagnose It

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How Insulin Resistance Is Measured?

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Insulin resistance is often silent. Many people don’t know they have it until blood sugar levels are already high. Testing helps detect problems early — before type 2 diabetes develops.

  • Measures insulin levels after an overnight fast.

  • High fasting insulin can mean the body is working too hard to keep blood sugar normal.

  • Uses fasting glucose + fasting insulin in a formula.

  • A higher score suggests insulin resistance.

  • You drink a sugary solution. Blood sugar and insulin are measured at intervals.

  • Shows how well the body handles glucose

  • Reflects average blood sugar over 3 months.

  • Not a direct insulin resistance test, but high values may indicate long-term insulin problems.

  • High triglycerides + low HDL often signal insulin resistance.

  • Simple but powerful indirect marker.

If results suggest insulin resistance:

  • Adopt a whole-food, low-carb diet

  • Exercise (weight training + walking)

  • Improve sleep and stress control

  • Work with your doctor on next steps

👉 Think you may have insulin resistance? Ask your doctor about a fasting insulin test or HOMA-IR.
👉 Learn more:→ Insulin Resistance Diet 
👉 Explore:→ How to Reverse Insulin Resistance 

FAQs

The fasting insulin test and HOMA-IR are commonly used.

Yes. Many people with insulin resistance have normal glucose at first, but high insulin levels.

Not directly — it shows average blood sugar. But high HbA1c can suggest long-term insulin issues.

If you’re at risk, testing every 6–12 months can help detect early changes.

Yes — diet, exercise, and weight loss can reverse insulin resistance in many cases.

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