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PARATHYOID HORMONE-INTACT (8000100024(LAB000394))
Test Mnemonic:

PTH-GRP
Specimen Requirements:
Collection:

 

7mL of blood in SST, PST or red topped.  AM collection preferred. (Min.: 3mL of blood).
Container:

 SST, PST or red topped
Minimum Volume:

3 mL of blood
Storage/Transport:

If delivery time is to be greater than 2 hours from time of draw, centrifuge and store the specimen according to the Specimen Preparation instructions below.
Stability:

 

Serum:
Room temperature for ≤ 4 hrs; refrigerated for ≤ 8 hrs; frozen for ≤ 6 months.

Plasma:
Room temperature for ≤ 8 hrs; refrigerated for ≤ 48 hrs; frozen for ≤ 6 months
Causes for Rejection:

Incomplete and/or incorrect sample identification, improper storage/transport, and gross hemolysis or lipemia.  
Specimen Preparation:

Allow SST or red top to clot completely at room temperature.  Centrifuge all tube types within 2 hours of collection.  Transfer serum/plasma to a properly labeled transport tube prior to freezing.  Refrigerated specimens may be submitted in the primary collection container if a gel barrier tube is used.
Methodology:

Chemiluminescence
Performed:

Special Chemistry: Monday-Friday (7 am – 3:30pm)
Turnaround Time:

  M-F: 24 hours
Reference Range:

By report (reports may vary based on instrumentation, patient age and sex)
CPT 4 Code:

83970
Note:

For Rapid Intraoperative PTH analysis.  Please notify the laboratory the day prior to analysis at ext. 29222 during the hrs 7-3 or after hours at ext 29227.  The sample must be hand delivered to the Core Laboratory in CSW 7.412
Clinical Indication:

 Identify hyperparathyroidism or to find cause of abnormal calcium levels or Vitamin D levels
Effective Date: 07/11/2013
Reviewed By/Date: Okorodudu, Anthony - 05/23/2019
Approved By/Date: Okorodudu, Anthony - 12/20/2022
When ordering tests for which Medicare or Medicaid reimbursement will be sought, physicians should only order tests that are medically necessary for the diagnosis or treatment of the patient. Components of the organ or disease panels may be ordered individually. The diagnostic information must substantiate all tests ordered and must be in the form of an ICD-10 code or its verbal equivalent.

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