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Range Atlas is AI-collected and not medically reviewed. It is for informational purposes only, meant to help curious people start a conversation with a healthcare professional. The chart shows how sources disagree, not whether a value is good or bad for you. Color shows what each source's region means, not a recommendation.

uIU/mL · 4 sources · 1 countries · spread n/a

Fasting insulin reference ranges

Order test
How to readbounded rangethis level and upthis level and belowLab referenceOptimal / target
Source
0.0 uIU/mL1326 uIU/mL
Value
Meaning
Labs and hospital systems
3.0-25 uIU/mL
Reference
Practitioner and biohacker targets
2.0-5.0 uIU/mL
Optimal
1.9-8.0 uIU/mL
Optimal
<= 10 uIU/mL
Optimal

Fasting insulin assays are not standardized across labs, so there is no single agreed reference range. uIU/mL equals mIU/L.

Developer QA and conversion details

Unit rule: normalize to common United States display units. Mayo is the tiebreaker, then Quest, then Labcorp. Fixture: 17 markers, 101 rows, 70 source names, 11 conversion rules.

visualShape is stored geometry (band, floor, ceiling, point). regionMeaning is stored polarity (reference, optimal, concern_low, concern_high). Neither is inferred from labels at render time.

Conversion guardrails for Fasting insulin
pmol/L to uIU/mLvalue / 6.945