All markers › Blood sugar
Fasting insulin
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<6 µIU/mL (HOMA-IR <1.5)From the Sorrell MD Lab Decoder. Optimal ranges are stricter than the "normal" range printed on a lab report.
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 home page. Quest and Walk-In Lab add a physician fee of about $6 per order.