Ionized Calcium

Ionized calcium measures the amount of free, active calcium in your blood that is not bound to proteins. It is the biologically active form and a more precise indicator of calcium status than total c…

Category: Metabolic Panel

Also known as: ionized calcium, free calcium, ica, ca2+, ca ionized, calcium ionized

Reference range: 4.5–5.3 mg/dL (Source: ABIM)

Standard unit: mg/dL

High values may indicate

High ionized calcium levels may indicate hyperparathyroidism, certain cancers, or excessive vitamin D intake.

Low values may indicate

Low ionized calcium levels may indicate hypoparathyroidism, vitamin D deficiency, sepsis, or complications from blood transfusions.

Source: MedlinePlus, U.S. National Library of Medicine

Track your Ionized Calcium over time with BloodId