Calcium (Corrected), Serum/Plasma

Corrected calcium is a a nomogram for calculating ionised calcium from total calcium and albumin. It is used to correct for the change in total calcium due to the change in albumin-bound calcium. However, this estimation of ionised calcium is based on several assumptions and therefore, is only a first approximation, since other variables, including pH, temperature, albumin to globulin ratio, magnesium, and citrate are known to influence the ionisation of calcium.

1 ml Serum 1 ml Li-Heparin Plasma Stability: 7 Days at 15-25 °C 3 Weeks at 2-8 °C 4 Months at (-15)-(-25) °C

Adult: 8.6 - 10.0 mg/dL 2.15 - 2.50 mmol/L Child: 8.4 - 11.0 mg/dL 2.10 - 2.75 mmol/L