All markers › Nutrients
Vitamin B12
Needed for nerves and red blood cells. Low levels are common with metformin, acid blockers or plant-based diets.
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 | add-on | 2026-10-16 |
| Jinfiniti AgingSOS Cellular Essentials | — | — |
| Quest (questhealth.com) | $49 Vitamin B12 Test | 2026-10-16 |
| Labcorp OnDemand | $49 Vitamin B12 Test | 2026-10-16 |
| Walk-In Lab | $35 Vitamin B12 Blood Test | 2026-10-16 |
| Ulta Lab Tests | $28.95 Vitamin B12 Test | 2026-10-16 |
| Mito Health | $9.79 non-member price; member $6.99 | 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.