Metabolic · Sensitivity proxy
Men Women (soon)
Insulin Fasting(F Insulin)
Insulin rises before glucose does. Catching insulin resistance via fasting insulin can flag metabolic risk a decade before a standard glucose panel will.
Optimal range
Range varies by individual.
Avg. cost (US)
$45
Test frequency
Annually
When to measure
After 10–12 hours of fasting.
How to measure
Immunoassay. Most standard panels do NOT include this — you have to ask for it.
Average cost
≈ $45 cash price. Often covered by insurance with relevant ICD-10.
Signs your level is off
Symptoms if low
Rare; possible malnutrition
Symptoms if high
Insulin resistance.
If your level is low
Chromium: low blood sugar
Supplement
Chromium· 200 µg/day
Form: Picolinate
Improves insulin signaling.
Foods
- Apple cider vinegar
Lifestyle
- Intermittent fasting
Caution: Chromium: low blood sugar
If your level is high
Berberine: hypoglycemia
Supplement
Berberine· 500 mg/day
Form: Extract
Reduces insulin secretion.
Foods
- Low-carb diet
Lifestyle
- Balanced diet
Medication (if prescribed)
Semaglutide· 0.25 mg/week
Form: Injectable
Reference only. Speak with a licensed clinician before any prescription intervention.
Caution: Berberine: hypoglycemia
Test these together
These biomarkers contextualize Insulin Fasting and unlock a clearer picture than any single value can.
Protocols that move this marker
Selected studies
PMC
The prime report
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