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Test Code
PTHRP
Test Name
PTHrP (PTH-Related Peptide)
CPT Codes
82397
Expected Turnaround Time
5 - 10 days
Specimen and Container Info

Specimen Type: Plasma

Collection Container: Chilled or prefrozen lavender top EDTA

Desired Specimen Volume: 1 mL
Collection Instructions
  1. Collect chilled or prefrozen lavender top EDTA tube via venipuncture.  
  2. After venipuncture, immediately invert tube several times to ensure complete mixture.
Processing and Submission Instructions
  1. Separate plasma from cells.
  2. Transfer 1 mL of plasma to a LabCorp PP transpak frozen purple tube within 15 minutes of collection.
  3. To avoid delays in turnaround time when requesting multiple test on frozen sample, please submit separate frozen specimens for each test requested.
Transport Instructions

Transport to the laboratory frozen. 
Stability Requirements

Room Temperature

 4 hours

Refrigerated

 4 hours

Frozen

1 month

Freeze/Thaw Cycles

 Stable x6
Causes for Rejection

Specimen received at room temperature
Methodology
Electrochemiluminescence (Eclia)
Limitations

The PTH-rP assay should not be used to exclude cancer or screen tumor patients for humoral hypercalcemia of malignancy (HHM). The results should always be assessed in conjunction with the patient's medical history, clinical examination, and other findings. If test results are clinically discordant, please contact the laboratory.
Reference Lab
Labcorp Of America Holdings
Testing Schedule
Monday-Friday
The American Medical Association (AMA) Current Procedural Terminology (CPT) codes published by HNL Lab Medicine are guidelines and are intended for informational purposes only. CPT coding is the exclusive responsibility of the billing entity. View the Terms.
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