PTH, INTACT AND CALCIUM
Test Code 8837
CPT Code(s) 82310, 83970
Methodology PTH: Immunoassay (IA) • Calcium: Spectrophotometry (SP)
Reference Range(s)
| Calcium | Male (mg/dL) | Female (mg/dL) |
| 8.4-10.6 | 8.4-10.6 | |
| 1-11 Months | 8.7-10.5 | 8.7-10.5 |
| 1-3 Years | 8.5-10.6 | 8.5-10.6 |
| 4-19 Years | 8.9-10.4 | 8.9-10.4 |
| 20-49 Years | 8.6-10.3 | 8.6-10.2 |
| >49 Years | 8.6-10.3 | 8.6-10.4 |
| 6-9 Years | 9-59 pg/mL |
| 10-13 Years | 11-74 pg/mL |
| 14-17 Years | 9-69 pg/mL |
| >17 Years | 14-64 pg/mL |
| Interpretive Guide | Intact PTH | Calcium |
| Normal Parathyroid | Normal | Normal |
| Hypoparathyroidism | Low or Low Normal | Low |
| Hyperparathyroidism | ||
| Primary | Normal or High | High |
| Secondary | High | Normal or Low |
| Tertiary | High | High |
| Non-Parathyroid | ||
| Hypercalcemia | Low or Low Normal | High |
Clinical Significance
The assay is useful in making the diagnosis of primary hyperparathyroidism, secondary hyperparathyroidism, and a differential diagnosis of hypercalcemia. The assay helps in distinguishing hypercalcemia cause by either primary hyperparathyroidism or malignant disease.
Alternative Name(s)
Immunoreactive PTH,Sandwich PTH Assay,PTH Whole Molecule,Intact Hormone,Monogram