All markers › Thyroid
Reverse T3
An inactive form of T3. Some clinicians look at it during stress or illness.
Dr. Sorrell's optimal rangeNot set in the Lab DecoderUse your lab's reference range and talk it over with your clinician.
Who includes it, and what it costs
| Provider | Included / price | Checked |
|---|---|---|
| Function Health | not listed | 2026-10-16 |
| Superpower | not listed | 2026-10-16 |
| Jinfiniti AgingSOS Cellular Essentials | — | — |
| Quest (questhealth.com) | — | — |
| Labcorp OnDemand | — | — |
| Walk-In Lab | $69 Reverse T3 Blood Test, LC/MS/MS | 2026-10-16 |
| Ulta Lab Tests | — | — |
| Mito Health | $17.88 non-member price; member $12.77 | 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.