Macroprolactin


Abbrev Code:MACPRO   
Order Code:LAB6032Order Name:Macroprolactin
Synonyms:Macroprolactin by PEG
Methodology:Chemiluminescent immunoassay
CPT Codes: 84146 x1
Turnaround Time:Specimens are sent to reference laboratory Mon-Sat; results are reported within 1-8 days.


Collection Instructions

Specimen:Blood
Optimal Volume:2 mL
Minimum\Peds Volume:1.2 mL
Container:Red or gold (gel)
Alternate Containers: Green (lithium heparin, gel), Green (sodium heparin, no gel), Purple (EDTA), Red (no gel)


Processing and Shipping

Specimen Processing:Centrifuge and aliquot 1 mL, 0.5 mL minimum. Store in freezer.
Shipping Instructions:Ship on dry ice.
Stability:After separation from cells: 8 hours at room temperature; 7 days refrigerated; 1 month frozen.
Test Performed at or Referral Lab Lab Sendouts  (ARUP)
Referral Lab number:20765


Interpretive

Reference Range:

 

Prolactin

Age

Male, ng/mL

Female, ng/mL

1-9 y

2.1-17.7

2.1-17.7

10 y and older

2.1-17.7

2.8-26.0

 

Monomeric Prolactin

Age

Male, ng/mL

Female, ng/mL

1-9 y

2.1-13.3

2.1-13.3

10 y and older

2.1-13.3

2.8-19.5

Prolactin % Monomeric: Greater than 50%

If the % Monomeric Prolactin is 40-50%, then the result is indeterminate for macroprolactin. If the % Monomeric Prolactin is less than 40%, then this indicates the present of macroprolactin. A Monomeric Prolactin result above the upper reference limit is consistent with hyperprolactinemia.

 

Reference ranges for patients under one year of age are not provided by the reference laboratory.

 



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