Table 1.

Approximate distribution of phosphorus in a healthy 70-kg adult

	Phosphorus
Total body content	∼700 g
In bone	∼80%
In viscera	∼10.9%
In skeletal muscle	∼9%
In extracellular fluid	∼0.1%
Intracellular-to-extracellular ratio	∼100:1

From Reference 14.