II. Physiology
- See Calcium Homeostasis
- Phosphorus plays a key role in physiology
- Bone structure (85% of body Phosphorus, along with Calcium)
- Nucleic Acids (DNA, RNA)
- Nucelosides (ATP, ADP)
- Phospholipids (e.g. cell membrane lipid bilayer)
- Phosphorylated Proteins and sugars
III. Associated Conditions: Abnormal Phosphorus
- Rickets in children (Osteomalacia in Adults)
- Hematologic abnormalities (RBC and Platelet defects)
- Liver dysfunction
IV. Labs
- Serum Phosphorus
- Normal: 2.5-5 mg/dl
V. Causes: Abnormal
- Serum Phosphorus >5 mg/dl
- Serum Phosphorus <2.5 mg/dl
- See Hypophosphatemia