Casandra
Casandra Test Code QD03468Version 1 (DRAFT)
Performing Lab
PTH-Related Protein (PTH-RP)
Clinical Use
Order TestUse
Assists in the differential diagnosis of hypercalcemia, particularly in the context of solid tumors and suspected humoral hypercalcemia of malignancy. Measurement of PTH-related protein (PTH‑rP) aids in evaluating and managing patients with malignancy-associated hypercalcemia. ([jdos.nicholsinstitute.com](https://jdos.nicholsinstitute.com/dos/Lakeview/test/176003?utm_source=openai))
Special Instructions
Not provided.
Limitations
Not provided.
Test Details
Methodology
Immunoassay (Other)
Biomarkers
PTH‑rP
ProteinPTH‑rP • Concentration / Level • Quantitative (Continuous) (e.g., copies/mL, % expression)
Result Turnaround Time
2-4 days
Related Documents
For more information, please review the documents below
Specimen Requirements
Specimen
Plasma
Volume
0.5 mL
Minimum Volume
0.3 mL
Container
sodium heparin (green‑top) tube; plasma transferred to transport tube
Collection Instructions
Collect in sodium heparin tube; centrifuge as soon as possible; transfer plasma to transport tube; do not submit unspun tubes; mark specimen type as plasma
Causes for Rejection
Whole blood
Stability Requirements
| Temperature | Period |
|---|---|
| Room Temperature | 7 days |
| Refrigerated | 7 days |
| Frozen | 28 days |