Normal Reference Ranges
Adult
10 - 65 pg/mL
Pediatric
10 - 65 pg/mL
Clinical Significance
Regulates serum calcium and phosphorus. Must always be interpreted in conjunction with serum calcium levels.
Causes of High
- Primary hyperparathyroidism
- Secondary hyperparathyroidism (Vitamin D deficiency, CKD)
- Ectopic PTH production
Causes of Low
- Hypoparathyroidism (autoimmune, post-surgical)
- Hypercalcemia of malignancy