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Metabolic · Marker 02

Insulin · Fasting Insulin

Fasting insulin shows how hard your pancreas is working to keep your blood sugar normal in the morning, before you eat.

Educational, never diagnosticReviewed Apr 14, 2026

Common reference range

2–6 µIU/mL

Worth watching
Above 10 µIU/mL
Population median
8.7 µIU/mL
Units
µIU/mL

Your record always keeps the range printed on the report the result came from, which can differ from the range above.

Why it matters

What Insulin tells you.

A normal glucose with high insulin means your body is compensating, not healthy. This is usually the first metabolic signal to move, years before HbA1c.

Fasting insulin reveals the work being done behind a normal glucose number. A patient with normal fasting glucose and high fasting insulin is metabolically compensating, not metabolically healthy.

Trended over years, fasting insulin rises long before HbA1c does. We treat it as the earliest moveable signal in metabolic health.

What the record reads

The direction, not one number.

Year-over-year direction. We want this number trending down.

Insulin · µIU/mL · six results

Illustrative series

Once you file two results, the record compares them to each other rather than to a population average, and names the report each value came from.

What can influence it

The things that move Insulin.

In rough order of effect, and read alongside your own history rather than on their own.

  1. 01

    Resistance training

    Improves insulin signaling within weeks.

  2. 02

    Fiber intake

    Soluble fiber is the most reliable dietary lever.

  3. 03

    Sleep architecture

    Deep sleep restoration improves insulin sensitivity.

  4. 04

    Visceral fat mass

    DEXA-measured loss tracks closely with fasting insulin decline.

Daily things that show up here

  • Add resistance training
  • Eat more soluble fiber
  • Stabilize sleep windows
  • Reduce visceral fat

In your record

What happens when a Insulin result arrives.

The same four steps for every result, whether you upload a report or type a value in by hand.

  1. 01

    Filed to its date

    The value is stored against the day it was drawn, with the report it came from kept alongside it.

  2. 02

    Named and normalized

    Fasting Insulin is recognised as one measure, so the same marker from two labs joins one series.

  3. 03

    Read in plain language

    You see what it measures, whether it sits in the printed range, and what usually moves it.

  4. 04

    Shared only if you say so

    A clinician sees this result when you grant scoped, expiring access, and the view is logged.

This page is educational. It does not diagnose, and it does not replace a conversation with a clinician who can see your history.

Where to go next

  • Start with one report

    Upload a single lab report and Insulin is filed to its date, named and read back in plain language.

    Create my free record

  • Find someone to read it with

    The directory opens filtered to clinicians who work with metabolic markers.

    Verified clinicians

  • Read the evidence

    The reading list opens searched for Insulin, with every study linked back to its source.

    Studies on Insulin

Read alongside

Other metabolic markers.

References

Where this comes from.

  1. Crofts C, et al. Identifying hyperinsulinaemia in the absence of impaired glucose tolerance. Diabetes Res Clin Pract. 2016;118:50-57. DOI

Reviewed by Dr. Sarah Chen, MD · Last reviewed Apr 14, 2026