Info

🌱 來自: hypocalcemia

serum calcium

Calcium Correction for Hypoalbuminemia

• Corrected Calcium = (0.8 * (Normal Albumin - Pt’s Albumin)) + Serum Ca
• Note: formula assumes albumin units in g/dL.
• 人話：測量到的加上八成的差值

calcium distributions

• total body calcium: 1kg
  • bone 99%
  • body fluid: 10g
    • intracelluar fluid 99%
    • extracellular fluid 1%
      • intersitial fluid
      • serum calcium

serum calcium total calcium

• 375mg
• 10mg/dL
• 2.5mmol/L Ca molecular weight: 40g/mol = 0.0025mol/L*40g/mol
• 50% free calcium

bounded

• 10% to complexed anion
• 32% to albumin
• 8% to globuin

Note

TL;DR: normal free Ca = (serum Ca)/8