also known as Potassium in Serum or Plasma
An essential mineral dissolved in your blood that controls how your heart beats, your muscles contract, and your nerves fire, with levels tightly regulated by your kidneys.
| # | Retailer | Lab | Seen | Price | |
|---|---|---|---|---|---|
| 1 | Jason Healthcheapest via Quest · seen today | Quest | today |
| order → |
| 2 | Instalab via Multi-lab (5) · seen today | Multi-lab (5) | today | $7 | order → |
| 3 | Ulta Lab Tests via Quest · seen 5mo ago | Quest | 5mo ago | $14.95 | order → |
| 4 | Walk-In Lab via Quest,LabCorp · seen today | Quest,LabCorp | today | $34 | order → |
| 5 | HealthLabs seen today | — | today | $37 | order → |
| 6 | Personalabs via LabCorp · seen today | LabCorp | today | $71 | order → |
| 7 | True Health Labs seen 1mo ago | — | 1mo ago | $169 | order → |
| 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 |