Insulin (Fasting)
Insulin is a hormone made by the pancreas that helps glucose (blood sugar) move from the blood into cells for energy. A fasting insulin test measures how much insulin your body produces when you have…
Category: Diabetes & Glycemic
Also known as: insulin, fasting insulin, serum insulin, ins
Reference range: 2.6–24.9 µIU/mL (Source: ABIM)
Standard unit: µIU/mL
High values may indicate
High fasting insulin levels may indicate insulin resistance, increased risk of type 2 diabetes, polycystic ovary syndrome (PCOS), or Cushing's syndrome.
Low values may indicate
Low insulin levels may indicate type 1 diabetes, or late-stage type 2 diabetes where the pancreas can no longer produce enough insulin.
Frequently asked questions
- What is a normal Insulin (Fasting) level?
- A typical reference range for Insulin (Fasting) is 2.6–24.9 µIU/mL (source: ABIM). Reference ranges vary by laboratory, age, and sex, so always compare against the range on your own lab report.
- What units is Insulin (Fasting) measured in?
- Insulin (Fasting) is most commonly reported in µIU/mL. Labs in different countries may use other units — you can convert between them with BloodId's blood test unit converter.
- Where do Insulin (Fasting) reference ranges come from?
- BloodId uses ABIM standard reference ranges and educational information from MedlinePlus (see our methodology). Reference ranges still vary by lab, age, and sex, so always compare against your own report.
- Can I track Insulin (Fasting) over time?
- Yes. Upload results from any lab and BloodId charts your Insulin (Fasting) over time against its reference range, so you can see whether the trend is rising, falling, or stable.
Related biomarkers
Source: MedlinePlus, U.S. National Library of Medicine
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