Macroprolactin, Serum

Test Code

10728

CPT Codes
84146 (x2)<br>Limited Access Code

Preferred Specimen

1 mL serum

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.

Minimum Volume

0.6 mL

Instructions

Spin down and separate serum from clot

Transport Temperature

Refrigerated (cold packs)

Specimen Stability

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

Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)

Gross hemolysis

Methodology
Electrochemiluminescent Immunoassay

Setup Schedule

Set up: Daily; Report available: 1-3 days

Reference Range

See Laboratory Report

Clinical Significance

Determining biologically active levels of prolactin, in asymptomatic patients with elevated prolactin levels. Ruling out the presence of macroprolactin.

The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.