Test Details

Mnemonic

MAPRL

Ordering Code

3802700

CPT-4 Code(s)

84146 x 2

Specimen Information

Patient Preparation

Do not take vitamins or supplements containing biotin (vitamin B7) for 12 hours before draw.

Collect

Plain red-top

Specimen Preparation

Centrifuge, separate and send 1.0 mL serum refrigerated in a screw-capped plastic vial.

Alternate Specimen

Serum: SST

Minimum Volume

0.6 mL

Transport Temperature

Refrigerated

Rejection Criteria

Gross hemolysis

Stability

Room temperature: 24 hours
Refrigerated: 7 days
Frozen: 90 days

Methodology

Polyethylene Glycol (PEG) Precipitation followed by Electrochemiluminescent Immunoassay
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Reference Range

Unprecipitated Prolactin/Total Prolactin Ratio: >50%

Total Prolactin:
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

Percent of the precipitated (complexed) prolactin fracton of the total prolactin <50% (considered negative for macroprolactin)
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Performing Laboratory

Mayo Clinic Laboratories
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New York DOH Approval Status

Yes
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