| Disorder | Calcium | Phosphate | ALP | PTH |
|---|---|---|---|---|
| Osteoporosis | Normal | Normal | Normal | Normal |
| Osteomalacia | Decreased | Decreased | Increased | Increased |
| Primary hyperparathyroidism (→ osteitis fibrosa cystica) | Increased | Decreased | Increased | Increased |
| Chronic kidney disease (→ secondary hyperparathyroidism) | Decreased | Increased | Increased | Increased |
| Paget's disease | Normal | Normal | Increased | Normal |
| Osteopetrosis | Normal | Normal | Normal | Normal |