Fasting insulin: test price and optimal range
Short answer: Often rises years before blood sugar does, so it can be an early sign of insulin resistance. Must be fasting. Dr. Sorrell's optimal range is <6 µIU/mL (HOMA-IR <1.5). The lowest one-at-a-time list price we found was $3.41 at Mito Health (non-member price; member $2.43), checked 2026-10-16.
Who includes it, and what it costs
| Provider | Included / price | Checked |
|---|---|---|
| Function Health | ✓ included | 2026-10-16 |
| Superpower | ✓ included | 2026-10-16 |
| Jinfiniti AgingSOS Cellular Essentials | — | — |
| Quest (questhealth.com) | $99 Insulin Resistance Test Panel | 2026-10-16 |
| Labcorp OnDemand | $89 Insulin Resistance Test (sale $66.75) | 2026-10-16 |
| Walk-In Lab | $34 Insulin Fasting Blood Test | 2026-10-16 |
| Ulta Lab Tests | $27.95 Insulin Test | 2026-10-16 |
| Mito Health | $3.41 non-member price; member $2.43 | 2026-10-16 |
| Rythm Health | not listed | 2026-10-16 |
| SiPhox Health | — | — |
| Everlywell | — | — |
| LetsGetChecked | — | — |
Memberships (Function, Superpower) and Jinfiniti's panel cover many markers for one price; see the full comparison table. Quest and Walk-In Lab add a physician fee of about $6 per order.
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Frequently asked questions
What does a Fasting insulin test measure?
Often rises years before blood sugar does, so it can be an early sign of insulin resistance. Must be fasting.
What is the optimal Fasting insulin range?
Dr. Sorrell's optimal range is <6 µIU/mL (HOMA-IR <1.5). It comes from his Lab Decoder; your lab's printed reference range may differ.
Where can I buy a Fasting insulin test cheapest?
The lowest one-at-a-time list price we found was $3.41 at Mito Health (non-member price; member $2.43), checked 2026-10-16. Prices change often, so confirm on the seller's site.
Which memberships include Fasting insulin?
It is included in: Function Health, Superpower.
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