The simple idea
Where is calcium? About 99% is in bone. Of the calcium in blood (normal total ~2.2–2.6 mmol/L or 8.5–10.5 mg/dL), about half is free (ionised) — the active part — and the rest is bound to albumin or small anions.
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Part 8 · Hormones
Same concept, other depth: Clinical Reasoning →
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Where is calcium? About 99% is in bone. Of the calcium in blood (normal total ~2.2–2.6 mmol/L or 8.5–10.5 mg/dL), about half is free (ionised) — the active part — and the rest is bound to albumin or small anions.
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