Casandra
Casandra Test Code QD81793Version 1 (DRAFT)
Performing Lab
Prolactin, Total and Monomeric
Also known as: Macroprolactin, Big-Big Prolactin
Clinical Use
Order TestUse
This test evaluates both the total prolactin level and the biologically active monomeric fraction using PEG precipitation to help distinguish true hyperprolactinemia from benign macroprolactinemia.
Special Instructions
Fasting is recommended but not required. The test is performed weekly (Wednesday) at Quest Diagnostics laboratories.
Limitations
Not provided.
Test Details
Methodology
Immunoassay (Other)
Biomarkers
Prolactin, Monomeric
AnalyteProlactin, Monomeric • Concentration / Level • Quantitative (Continuous) (e.g., copies/mL, % expression)
Prolactin, Total
AnalyteProlactin, Total • Concentration / Level • Quantitative (Continuous) (e.g., copies/mL, % expression)
Result Turnaround Time
2-9 days
Related Documents
For more information, please review the documents below
Specimen Requirements
Specimen
Serum
Volume
1-2 mL
Minimum Volume
0.4 mL
Container
Red Top (no additive)
Collection Instructions
Collect blood by venipuncture into plain tube; separate serum. Fasting recommended but not required.
Causes for Rejection
Hemolysis; plasma
Stability Requirements
| Temperature | Period |
|---|---|
| Room Temperature | 7 days |
| Refrigerated | 7 days |
| Frozen | 6 months |