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Test Code PTHRP Parathyroid Hormone-Related Peptide (PTHrP), Plasma

Reporting Name

PTH-Related Peptide

Useful For

As an aid in the evaluation of patients with hypercalcemia of unknown origin


As an aid in the evaluation of patients with suspected humoral hypercalcemia of malignancy

Performing Laboratory

Mayo Clinic Laboratories in Rochester

Specimen Type

Plasma EDTA

Specimen Required

Collection Container/Tube: Ice-cooled, lavender top (EDTA)

Submission Container/Tube: Plastic vial

Specimen Volume: 0.7 mL

Collection Instructions: Centrifuge specimen down in a refrigerated centrifuge or in chilled centrifuge cups.

Specimen Minimum Volume

0.25 mL

Specimen Stability Information

Specimen Type Temperature Time
Plasma EDTA Frozen 30 days

Reference Values

≤4.2 pmol/L

Day(s) and Time(s) Performed

Monday through Thursday; 2 p.m. 

Test Classification

This test was developed and its performance characteristics determined by Mayo Clinic in a manner consistent with CLIA requirements. This test has not been cleared or approved by the U.S. Food and Drug Administration.

CPT Code Information


LOINC Code Information

Test ID Test Order Name Order LOINC Value
PTHRP PTH-Related Peptide 15087-0


Result ID Test Result Name Result LOINC Value
81774 PTH-Related Peptide 15087-0

Analytic Time

2 days

Specimen Retention Time

3 months

Reject Due To


Mild OK; Gross OK


Mild OK; Gross OK


Mild OK; Gross OK




Method Name

Immunochemiluminometric Assay (ICMA)