When is prolactin highest?
Disease description:
My menstrual period is several days late this month. I went to the hospital for a six-hormone panel test. When is prolactin level the highest?
Doctor's answer (1)
Dr. Yang Ziqi
Prolactin levels may vary at different times of the day and typically reach peaks under the following circumstances:
1. During sleep: Prolactin levels usually reach their highest during nighttime sleep, especially during the rapid eye movement (REM) sleep phase.
2. Stress response: Stress, pain, or physical stress can temporarily increase prolactin secretion.
3. Food intake: Some studies suggest that eating, particularly a high-protein meal, may cause a transient increase in prolactin levels.
4. Sexual activity and breastfeeding: Both orgasm and breastfeeding stimulate significant prolactin secretion.
5. Medication effects: Certain medications, such as antipsychotics, antidepressants, or some contraceptives, may also affect prolactin levels.
If an accurate measurement of blood prolactin levels is required, doctors usually recommend blood tests at specific time points.
