What is the normal value of prolactin?
Oct 13, 2023
Source: Cainiu Health
Dr. Yang Ziqi
Introduction
In general, the normal level of prolactin for adult males is 2.64–13.13 μg/L. However, the normal range for females varies depending on whether they are premenopausal, postmenopausal, or pregnant. In summary, the normal range for prolactin is not fixed, and it is recommended to undergo testing at a reputable hospital and consult a qualified physician.
Under normal circumstances, the normal prolactin level for adult males is 2.64–13.13 μg/L. For females, normal prolactin levels vary depending on physiological stage and must be interpreted according to whether the woman is premenopausal, postmenopausal, or pregnant. Specific details are as follows:
Prolactin is a protein hormone secreted by the anterior pituitary gland. Its structure is similar to that of growth hormone, and its primary function is to promote milk production. It can also stimulate the corpus luteum to secrete progesterone. Typically, the normal prolactin range for adult males is 2.64–13.13 μg/L; for healthy premenopausal women, the normal range is 3.34–26.72 μg/L; for postmenopausal women, it is 2.74–19.64 μg/L. Pregnant women represent a special group, with normal prolactin levels generally ranging from 9.7 to 208.5 μg/L. Normal prolactin values should be interpreted based on specific conditions, and variations in testing methods and reagents may lead to differences in reference ranges.
Prolactin levels are usually measured through venous blood sampling. Before undergoing a prolactin test, individuals should avoid strenuous exercise, as physical activity may elevate prolactin levels. Adequate sleep should be ensured, since sleep deprivation can interfere with normal prolactin secretion. Sexual activity should also be avoided prior to testing, as sexual stimulation may increase prolactin levels.
In addition, medications that may affect prolactin levels—such as antidepressants and antihypertensive drugs—should be avoided if possible. If currently taking any such medications, patients should inform their doctor in advance.
