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Test Name

PTH, Intact and Calcium

To view specimen requirements and codes please Select a regional laboratory.

Not sure which laboratory serves your office? Call us 866-MYQUEST (866-697-8378)

CPT Code(s)**

82310, 83970
**IMPORTANT: CPT Code is informational only; obtain the Test Code for ordering.

Methodology

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

Reference Range(s)

Calcium

Age Male (mg/dL) Female (mg/dL)
<1 Month 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

Parathyroid Hormone, Intact
<6 Years 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
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.

Test FAQ

PTH, Intact and Calcium

Alternative Name(s)

Immunoreactive PTH,Sandwich PTH Assay,PTH Whole Molecule,Intact Hormone,Monogram

Reference ranges are provided as general guidance only. To interpret test results use the reference range in the laboratory report.

The CPT codes provided are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payer being billed.

* The tests listed by specialist are a select group of tests offered. For a complete list of Quest Diagnostics tests, please refer to our Directory of Services.

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PTH, Intact and Calcium
8837