A member asked:

What does blood test of ionized calcium mean? what does it measure? what does it mean if the ionized calcium is below the normal range?

A doctor has provided 1 answer
Dr. Douglas Arenberg answered

Specializes in Pulmonary Critical Care

Can't tell: By itself any one blood test, normal or abnormal, means absolutely nothing unless there is some context. You can't determine the significance of this without knowing when it was drawn, why it was drawn, and whether there are any other abnormal tests. Sometimes it means absolutely nothing. Ask the doctor who drew it.

Answered 12/15/2013

4.7k views

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