Measure the level of 25-hydroxyvitamin D to understand vitamin D levels. Age eligibility: 10-100
| # | Retailer | Lab | Seen | Price | |
|---|---|---|---|---|---|
| 1 | Accesa Labscheapest seen today | — | today | $65 | order → |
| 2 | QuestDirectdirect via Quest · seen 1mo ago | Quest | 1mo ago | $75 | order → |
| 3 | LabCorp OnDemanddirect via LabCorp · seen 1mo ago | LabCorp | 1mo ago |
| Vitamin B12 | 16 retailers | $10 |
| Magnesium RBC Test | 14 retailers | $8 |
| Ferritin | 14 retailers | $9 |
| Calcium, Ionized | 14 retailers | $18 |
| Iodine Test | 13 retailers | $30 |
| Selenium | 12 retailers | $12 |
| Iron Test | 11 retailers | $13 |
| Zinc, Blood Test | 11 retailers | $11 |
| $99 |
| order → |