Aid in the evaluation of unexplained hypercalcemia, particularly in suspected hypercalcemia of malignancy.
Methodology:
Quantitative Immunoradiometry
Performed:
Wed, Thu, Sat
Reported:
2-6 days
Specimen Required:
Collect: Protease Inhibitor tube.
Specimen Preparation: Protease Inhibitor tube (ARUP supply #49662), available online through eSupply using ARUP Connect™ or contact ARUP Client Services at (800) 522-2787. A winged collection set must be used. NOT RECOMMENDED: Filling collection tubes directly through a needle/tube-holder assembly increases the risk of chemical reflux back into the vein of the patient. WARNING: Collection tubes are NOT STERILE. Mix Collection tube thoroughly. Separate the plasma from cells within 1 hour of collection by centrifugation. Transfer 1 mL plasma to an ARUP Standard Transport Tube and freeze. (Min: 0.5 mL) Do not submit the collection tube for testing.
Storage/Transport Temperature: Frozen. Separate specimens must be submitted when multiple tests are ordered.
Stability (collection to initiation of testing): After separation from cells: Ambient: Unacceptable; Refrigerated: 72 hours; Frozen: 3 months
Reference Interval:
Effective August 20, 2012
0.0-4.0 pmol/L
Interpretive Data:
See Compliance Statement D: www.aruplab.com/CS
CPT Code(s):
83519
Cross References:
Parathyroid Hormone Related Protein (Parathyroid Hormone-Related Peptide (PTHrP)), PTH Related Peptide (Parathyroid Hormone-Related Peptide (PTHrP)), PTH Related Protein (Parathyroid Hormone-Related Peptide (PTHrP))
