Urine Magnesium

Adults contain 20-30g of magnesium, and about 50% -70% of the bone is distributed to form bone salts. The rest is distributed as Mg2 + in various soft tissues such as skeletal muscle, heart muscle, liver, kidney, and brain. Mg2 + mainly exists in intracellular fluid, and extracellular fluid only accounts for 1%. Magnesium in red blood cells is about 3 times that in plasma. About 65% to 80% of serum magnesium exists in free form, and the rest exists in combination with plasma proteins. Blood magnesium has a synergistic inhibitory effect on neuromuscular stress. Magnesium is commonly found in various foods, and adults need about 20 mmol / L (0.5 g) of magnesium daily. The main excretion route of magnesium in the body is the kidneys. The kidney has a strong ability to protect magnesium. When the magnesium intake is insufficient, the kidney's magnesium excretion can be lower than 1mmol / 24h. Mg: Atomic weight 22.990.

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