Macroprolactin
| Abbrev Code: | MACPRO | ||
| Order Code: | LAB6032 | Order 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
Monomeric Prolactin
Monomeric Prolactin Percent: 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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