Daily intake and output of phosphorus
| Intake: 1,200–1,500 mg/day, mostly from protein |
| Absorption: 800–900 mg (promoted by vitamin D) |
| Disposition: Bone (as hydroxyapatite) 85% Soft tissue 15% Extracellular fluid 0.1% |
| Excretion: Urine 650–700 mg (fractional excretion 15%–20%) Feces 150–200 mg |