Intermediate
Technical
IVT
Prolactin
A pituitary hormone that stimulates milk production and affects reproductive function.
Full Definition
Prolactin is a hormone produced by the anterior pituitary gland that primarily regulates lactation but also influences reproductive hormones and fertility. Elevated prolactin (hyperprolactinemia) can cause irregular menstruation, infertility, and galactorrhea. Prolactin levels vary throughout the day and are affected by stress, medications, and medical conditions. Testing requires specific collection protocols due to its stress-sensitive nature.
Usage
Usage note: Note collection timing requirements; specify if fasting sample needed.
In Context
- "Elevated prolactin levels may indicate a pituitary adenoma requiring MRI evaluation." — Endocrinology consultation
- "Prolactin should be drawn after 30 minutes of rest to avoid stress-induced elevation." — Laboratory protocol
Also known as
PRL
Don't confuse with
Growth Hormone
LH
FSH