Calcium/Albumin Ratio
The calcium/albumin ratio compares total calcium in the blood with albumin — the most abundant blood protein. Most calcium in blood is bound to albumin, so albumin levels affect what total calcium readings actually reflect.
Why it matters: When albumin is low, total calcium can read low even when the active (free) calcium is in the typical range. The ratio helps put the calcium reading in context with the albumin level.
May increase with:
May decrease with:
What is Calcium/Albumin Ratio?
The calcium/albumin ratio compares total calcium in the blood with albumin — the most abundant blood protein. Most calcium in blood is bound to albumin, so albumin levels affect what total calcium readings actually reflect.
What might a high or low Calcium/Albumin Ratio mean?
When albumin is low, total calcium can read low even when the active (free) calcium is in the typical range. The ratio helps put the calcium reading in context with the albumin level.
What can affect Calcium/Albumin Ratio?
It may be higher with: Hyperalbuminemia, Hypercalcemia. It may be lower with: Hypoalbuminemia, Hypocalcemia.
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