Art and Science of Laboratory Medicine

Art and Science of Laboratory Medicine

Friday, January 2, 2015

Disorders of Plasma Sodium

Human cells dwell in salt water. Their well-being depends on the ability of the body to regulate the salinity of extracellular fluids. By controlling water intake and excretion, the osmoregulatory system normally prevents the plasma sodium concentration from straying outside its normal range (135 to 142 mmol per liter). Failure of the system to regulate within this range exposes cells to hypotonic or hypertonic stress.

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Disorders of Plasma Sodium

Source: NEJM

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