Macroprolactin, Blood (Referred Out) - Saskatoon
Discipline
Biochemistry
Overview
Description
- Prolactin will be screened first
- Macroprolactin will only be performed when the total prolactin is elevated.
Specimen Information
Specimen types accepted
- Serum
Specimen collection container
- Preferred collection container: Gold (gel)
- Alternative collection container: Red (non-gel)
Required volume
- Optimal volume: 4.5 mL Full collection tube
- Minimum volume: 1 mL serum
(Submitting the minimum volume makes it impossible to repeat the test or perform confirmatory/reflex testing. In some situations, a minimum volume may require a second collection.)
Transport and stability
- After separation from cells: Refrigerated: 48 hours; Frozen: 3 months; Ambient: 24 hours.
Testing Information
Clinical interpretation
- Used to investigate elevated prolactin in asymptomatic patients
- Both the total prolactin and the percentage of macroprolactin will be reported
Performance
Days/times performed
Availability |
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Testing site |
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Maximum laboratory time
Results reporting
- One day turnaround time by testing laboratory
Other information
- Used to investigate elevated prolactin in asymptomatic patients
- Both the total prolactin and the percentage of macroprolatin will be reported
Last Updated: October 4, 2024