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Item Value
Approval req'd? No
Available Stat? No
Test code MACPRO
Performed by Quest
Sendout? Yes
Method Immunoassay & PEG precipitation
Patient Preparation Fasting recommended but not required
Container type Gold top or Red top
Amount to Collect 2 mL blood
Sample type Serum
Preferred volume 1 mL serum
Min. Volume 0.4 mL serum
UCSF Rejection Criteria Plasma samples, hemolyzed samples
Processing notes Aliquot and freeze serum. Transport to CB frozen. Order Quest code 16122
Ref Lab Rejection Criteria Plasma samples, hemolyzed samples
Units ng/mL
Normal range
Synonyms prolactin monomeric; monomeric prolactin
Stability Room temperature or refrigerated 1 week, frozen 6 months
Turn around times 7-10 days
Additional information For some patients the level of Prolactin measured by immunoassay may be inaccurate with respect to the level of monomeric, biologically active Prolactin. The Macroprolactin by PEG Precipitation test can help to identify if a patient sample has elevated Prolactin due to mostly inactive protein-bound Prolactin (Macroprolactin).
CPT coding 84146-90 x2
Last Updated 7/6/2015 8:33:53 AM
Entry Number 1603
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