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HelpTest ID PTHRP Parathyroid Hormone-Related Peptide, Plasma
Useful For
Aiding in the evaluation of individuals with hypercalcemia of unknown origin
Aiding in the evaluation of individuals with suspected humoral hypercalcemia of malignancy
The test should not be used to exclude cancer or screen individuals with tumors for humoral hypercalcemia of malignancy.
Performing Laboratory
Mayo Clinic Laboratories in Rochester
Specimen Type
Plasma EDTASpecimen Required
Supplies: Sarstedt Aliquot Tube, 5 mL (T914)
Collection Container/Tube: Ice-cooled, lavender top (EDTA)
Submission Container/Tube: Plastic vial
Specimen Volume: 0.7 mL
Collection Instructions:
1. Centrifuge specimen in a refrigerated centrifuge or in chilled centrifuge cups.
2. Aliquot plasma into plastic vial and freeze.
Specimen Stability Information
| Specimen Type | Temperature | Time |
|---|---|---|
| Plasma EDTA | Frozen | 30 days |
Reference Values
≤4.2 pmol/L
Reference values have not been established for patients younger than 1 year.
Day(s) Performed
Monday through Thursday
CPT Code Information
82397
Report Available
2 to 5 daysReject Due To
| Gross hemolysis | Reject |
| Gross lipemia | OK |
| Gross icterus | OK |
Forms
If not ordering electronically, complete, print, and send a General Request (T239) with the specimen.