PTH, Intact and Calcium

PTH, Intact and Calcium


SKU: PTH, Intact and Calcium Category:

The PTH, Intact & Calcium

This discount blood lab test is used to determine the cause of calcium imbalances; to evaluate parathyroid function; to diagnose and differentiate between primary, secondary, and tertiary hyperparathyroidism; to diagnose hypoparathyroidism; during surgery for hyperparathyroidism to confirm removal of the gland(s) causing the problem.

Test Methodology

PTH: Immunoassay (IA) • Calcium: Spectrophotometry (SP)

Reference Range(s)


Age Male (mg/dL) Female (mg/dL)
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

Parathyroid Hormone, Intact

Not established
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
  Primary Normal or High High
  Secondary High Normal or Low
  Tertiary High High
  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

The lab estimates that the testing will take 3 to 7 business days. 

Quest test code 8837

Please be advised, that our services are strictly self pay and are not eligible for submission as a claim to your health insurance provider. However, you can submit the receipt for reimbursement to many Flexible Spending and Health Savings Accounts for reimbursement.


My Account