The Vitamin B-12 blood lab test measures vitamin B-12 to find deficiency that affect nerves and blood cells. Processed by Quest Diagnostics Draw Locations Turnaround Time: 5-7 Business Days
| # | Retailer | Lab | Seen | Price | |
|---|---|---|---|---|---|
| 1 | True Health Labs seen 1w ago | — | 1w ago | $49 | order → |
| Vitamin B12 | 15 retailers | $10 |
| Iodine Test | 14 retailers | $30 |
| Magnesium RBC Test | 14 retailers | $8 |
| Ferritin | 14 retailers | $9 |
| Calcium, Ionized | 14 retailers | $18 |
| Selenium | 12 retailers | $12 |
| Iron Test | 11 retailers | $13 |
| Zinc, Blood Test | 11 retailers | $11 |