Most calcium in your blood travels bound to albumin. If your albumin is low, your calcium reads low too, and the correction adjusts for that.
| Result | Band |
|---|---|
| Under 8.5 mg/dL | Low |
| 8.5 to 10.2 mg/dL | Typical |
| Above 10.2 mg/dL | High |
Corrected calcium = measured calcium + 0.8 × (4.0 − albumin), with albumin in g/dL. ⚠️ The correction is an approximation and an ionised calcium is more accurate where it matters.
BloodMarker reads your whole panel and tells you what the lines say together, which is the part no single calculation can do.
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When albumin is outside the normal range, because total calcium then misrepresents the biologically active fraction.
No. Ionised calcium measures the active fraction directly. The correction is a convenience when that test is not available.
Not medical advice. These calculators are for information only. Reference bands differ between laboratories and none of these numbers can be interpreted without your history, your other results and a clinician. Nothing you type here is sent to us or stored on a server.