Laboratory Medicine

Test catalogue

Macroprolactin, Serum
Test Name Macroprolactin, Serum
Specimen Type / Requirements Container Type = Gold (SST) Minimum Testing Volume = 1mL Serum Tube must fill to at least ½ or greater of its vacuum capacity Green Top (Lithium Hep) is acceptable
Specimen Handling Collection Instructions: Collect specimen in red or gold top tube. Serum is preferred but green Top (Li Heparin) is acceptable. This test includes Prolactin. Write your initials, date and time of collection on the collection label. Laboratory Staff Instructions: Separate serum or plasma from cells within 2 hours of collection. Thaw only once. Stability: Stable at room temperature for 8 hours, refrigerated for 2 days, or frozen at -20°C or below for up to four months before testing. Thaw only once. Transportation: *In-house:* Transport at room temperature ASAP. *Referred-in:* Store and send specimens frozen to SMH core lab. Sample Rejection Criteria: Unlabeled or specimen of non sufficient quantity. Avoid multiple freeze - thaw cycles.
Required Documentation
Turnaround Time (TAT) 7 days	Test Utilization
Reference Value Prolactin Female: 0.0-25.0 ug/L, Male: 0.0-18.0 ug/L Macroprolactin Normal = < 0.20 Borderline = 0.20 – 0.40 Abnormal = > 0.40
Test Code PROLM	Methodology Immunoassay with PEG precipitation
Testing Location SMH-Biochemistry	Other Information Last Updated: March 27, 2023

Macroprolactin, Serum

Test Name

Macroprolactin, Serum

Specimen Type / Requirements

Container Type = Gold (SST)

Minimum Testing Volume = 1mL Serum

Tube must fill to at least ½ or greater of its vacuum capacity

Green Top (Lithium Hep) is acceptable

Specimen Handling

Collection Instructions: Collect specimen in red or gold top tube. Serum is preferred but green Top (Li Heparin) is acceptable. This test includes Prolactin. Write your initials, date and time of collection on the collection label.

Laboratory Staff Instructions: Separate serum or plasma from cells within 2 hours of collection. Thaw only once.

Stability: Stable at room temperature for 8 hours, refrigerated for 2 days, or frozen at -20°C or below for up to four months before testing. Thaw only once.

Transportation: In-house: Transport at room temperature ASAP. Referred-in: Store and send specimens frozen to SMH core lab.

Sample Rejection Criteria: Unlabeled or specimen of non sufficient quantity. Avoid multiple freeze - thaw cycles.

Required Documentation

Turnaround Time (TAT)

7 days

Test Utilization

Reference Value

Prolactin

Female: 0.0-25.0 ug/L, Male: 0.0-18.0 ug/L

Macroprolactin

Normal = < 0.20 Borderline = 0.20 – 0.40 Abnormal = > 0.40

Test Code

PROLM

Methodology

Immunoassay with PEG precipitation

Testing Location

SMH-Biochemistry

Other Information

Last Updated: March 27, 2023