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Prolactin, Plasma or Serum
Test Code991
CPT Codes
84146
Preferred Specimen
Submit only 1 of the following specimens:
Plasma
Container/Tube: Green-top (heparin) tube(s)
Specimen Volume: 3 mL (minimum volume: 0.5 mL) of plasma
Collection Instructions: Draw blood from a patient who has been awake for at least 2 hours.
Note: 1. Indicate plasma. 2. Label specimen appropriately (plasma).
Serum
Container/Tube: Serum gel tube(s)
Specimen Volume: 3 mL (minimum volume: 0.5 mL) of serum
Collection Instructions: Draw blood from a patient who has been awake for at least 2 hours.
Note: 1. Indicate serum. 2. Label specimen appropriately (serum).
Plasma
Container/Tube: Green-top (heparin) tube(s)
Specimen Volume: 3 mL (minimum volume: 0.5 mL) of plasma
Collection Instructions: Draw blood from a patient who has been awake for at least 2 hours.
Note: 1. Indicate plasma. 2. Label specimen appropriately (plasma).
Serum
Container/Tube: Serum gel tube(s)
Specimen Volume: 3 mL (minimum volume: 0.5 mL) of serum
Collection Instructions: Draw blood from a patient who has been awake for at least 2 hours.
Note: 1. Indicate serum. 2. Label specimen appropriately (serum).
Instructions
Specimen must arrive within 24 hours of draw.
Transport Temperature
Refrigerate <=24 hours/Frozen OK
Methodology
Immunochemiluminescent Assay, 3rd I.S.
Setup Schedule
Monday through Sunday
Reference Range
Males:
2.5-17.0 ng/mL
Females (based on menstrual cycle)
Entire cycle: 4.6-37 ng/mL
Follicular phase: 4.5-33 ng/mL
Midcycle: 6.3-46 ng/mL
Luteal phase: 4.9-40 ng/mL
Females, pregnant
First trimester: 3.2-43 ng/mL
Second trimester: 13-166 ng/mL
Third trimester: 13-318 ng/mL
2.5-17.0 ng/mL
Females (based on menstrual cycle)
Entire cycle: 4.6-37 ng/mL
Follicular phase: 4.5-33 ng/mL
Midcycle: 6.3-46 ng/mL
Luteal phase: 4.9-40 ng/mL
Females, pregnant
First trimester: 3.2-43 ng/mL
Second trimester: 13-166 ng/mL
Third trimester: 13-318 ng/mL
Clinical Significance
Useful for detection of prolactin-secreting tumors; work-up in females for infertility, secondary amenorrhea, uncommonly primary amenorrhea, oligomenorrhea; and work-up in males for impotence, gynecomastia, and hypogonadism.
Performed By
CoxHealth
