Corrected Calcium Calculator
Adjust serum calcium for albumin levels
About This Calculator
Serum calcium levels are affected by albumin concentration. This calculator adjusts measured calcium to account for low albumin levels, providing a more accurate assessment of true calcium status.
Formula:
Corrected Calcium = Measured Calcium + 0.8 × (4.0 - Albumin)
Reference Ranges:
- • Normal: 8.5-10.5 mg/dL
- • Hypocalcemia: <8.5 mg/dL
- • Hypercalcemia: >10.5 mg/dL
References:
- 1. Payne RB, et al. Interpretation of serum calcium in patients with abnormal serum proteins. Br Med J. 1973;4(5893):643-646.
- 2. Dickerson RN, et al. Accuracy of predictive methods to estimate ionized and corrected serum calcium concentrations in critically ill patients. J Am Coll Nutr. 2004;23(4):307-315.
- 3. Class CM, et al. Albumin-corrected calcium and ionized calcium in stable haemodialysis patients. Nephrol Dial Transplant. 2000;15(11):1841-1846.
Medical Disclaimer: This calculator is for educational purposes only. Always consult with healthcare professionals for medical decisions.