Fasting Insulin
Insulin concentration in blood after an overnight fast, in uIU/mL. Optimal range: Below 10 uIU/mL, with 2-5 uIU/mL often cited as optimal.
What it measures
Insulin concentration in blood after an overnight fast, in uIU/mL. A direct read on how hard your body works to keep blood sugar normal.
Why it matters
Elevated fasting insulin (hyperinsulinemia) is the earliest detectable signal of insulin resistance, often appearing years before glucose or HbA1c rise. It drives fat storage and metabolic disease.
Optimal ranges
Sourced targets, not just lab reference ranges. Lab ranges describe the population; these describe where the evidence says you want to be.
Sourcing caveat
The range below is a widely cited clinical heuristic. No published guideline target was found, and the source is marked for verification. Treat it as a starting point for a conversation with your doctor, not a settled target.
| Range | Context |
|---|---|
| Below 10 uIU/mL, with 2-5 uIU/mL often cited as optimal | Widely cited clinical heuristic based on Kraft's criteria; conventional lab ranges often run to 25 uIU/mL, which many metabolic clinicians consider far too permissive. No published guideline target found; verification needed. |
How to improve it
- 1
Cut refined carbohydrates and sugary drinks
- 2
Resistance training and daily movement
- 3
Lose excess visceral fat
- 4
Consider time-restricted eating
Connected to
Goals
Ingredients
Longevity Lab Report
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Educational information, not medical advice. Talk to your doctor before acting on any biomarker result.