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Mayo Clinic Laboratories

Test Code PROL* Prolactin, Serum

Additional Codes

Mayo Test ID
PRL

Reporting Name

Prolactin, S

Useful For

Aiding in evaluation of pituitary tumors, amenorrhea, galactorrhea, infertility, and hypogonadism

 

Monitoring therapy of prolactin-producing tumors

Performing Laboratory

Mayo Clinic Laboratories in Rochester

Specimen Type

Serum


Specimen 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 days

Method Name

Electrochemiluminescence Immunoassay

CPT Code Information

84146 

Forms

If not ordering electronically, complete, print, and send an Oncology Test Request (T729) with the specimen.