11 ordering services comparedPrices last checked 19 hours ago
Measures the free, biologically active form of calcium in the blood, unbound to protein. Used when total calcium results are inconclusive, or to more precisely assess calcium status in critically ill patients.
These are online lab ordering services — not the physical draw site. Once you purchase a requisition, you visit a nearby Quest or LabCorp patient service center for your blood draw. Prices are self-pay cash rates and may vary by location.