Corrected Calcium Calculator
Calcium adjusted for low albumin.
Enter your values
ⓘ Live results
Results
- Corrected calcium
- 9.08 mg/dL
- Measured calcium
- 8.2 mg/dL
- Correction applied
- 0.88 mg/dL
- Status
- Normal range
- In mmol/L
- 2.27
Quick answer
Low albumin lowers measured total calcium without changing ionised calcium, so correction adds 0.8 mg/dL per 1 g/dL albumin deficit.
Corrected = Ca + 0.8 × (4 − albumin)
How to use the Corrected Calcium Calculator
- 1Enter serum calcium in mg/dL.
- 2Enter serum albumin in g/dL.
- 3Compare the corrected value with the normal range.
Worked example
Using the values the calculator loads with:
Inputs
- Serum calcium8.2 mg/dL
- Albumin2.9 g/dL
Results
- Corrected calcium9.08 mg/dL
- Measured calcium8.2 mg/dL
- Correction applied0.88 mg/dL
- StatusNormal range
- In mmol/L2.27
Frequently asked questions
Is ionised calcium better?
Yes — direct ionised calcium measurement is the gold standard when available.
What is the normal range?
Roughly 8.5–10.5 mg/dL for total calcium.
About this calculator
- Built and reviewed by James Whitfield · How we build and test calculators
- Report an error
Results are estimates for general information. For medical, legal, structural or financial decisions, confirm with a qualified professional.