Test Code PROL* Prolactin, Serum
Additional Codes
Mayo Test ID |
---|
PRL |
Reporting Name
Prolactin, SUseful For
Aiding in evaluation of pituitary tumors, amenorrhea, galactorrhea, infertility, and hypogonadism
Monitoring therapy of prolactin-producing tumors
Performing Laboratory

Specimen Type
SerumSpecimen Required
Patient Preparation: For 12 hours before specimen collection do not take multivitamins or dietary supplements containing biotin (vitamin B7), which is commonly found in hair, skin, and nail supplements and multivitamins.
Container/Tube:
Preferred: Serum gel
Acceptable: Red top
Submission Container/Tube: Plastic vial
Specimen Volume: 0.6 mL
Collection Instructions: Centrifuge and aliquot serum into a plastic vial.
Specimen Minimum Volume
0.5 mL
Specimen Stability Information
Specimen Type | Temperature | Time | Special Container |
---|---|---|---|
Serum | Refrigerated (preferred) | 7 days | |
Frozen | 90 days | ||
Ambient | 24 hours |
Reference Values
Males
<18 years: not established
≥18 years: 4.0-15.2 ng/mL
Females:
<18 years: not established
≥18 years: 4.8-23.3 ng/mL
For SI unit Reference Values, see https://www.mayocliniclabs.com/order-tests/si-unit-conversion.html
Day(s) Performed
Monday through Sunday
Test Classification
This test has been cleared, approved, or is exempt by the US Food and Drug Administration and is used per manufacturer's instructions. Performance characteristics were verified by Mayo Clinic in a manner consistent with CLIA requirements.LOINC Code Information
Test ID | Test Order Name | Order LOINC Value |
---|---|---|
PRL | Prolactin, S | 20568-2 |
Result ID | Test Result Name | Result LOINC Value |
---|---|---|
PRL | Prolactin, S | 20568-2 |
Report Available
Same day/1 to 2 daysMethod Name
Electrochemiluminescence Immunoassay
CPT Code Information
84146
Forms
If not ordering electronically, complete, print, and send an Oncology Test Request (T729) with the specimen.