Measure 6 key nutrient levels: magnesium, vitamin B9 (folate), vitamin B12 (cobalamin), vitamin D, iodine, & zinc. Age eligibility: 18-100
| # | Retailer | Lab | Seen | Price | |
|---|---|---|---|---|---|
| 1 | QuestDirectdirect via Quest · seen 1mo ago | Quest | 1mo ago | $239 | 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 |