Normal Prolactin Range

Prolactin is a polypeptide protein hormone secreted by lactotroph cells in the anterior pituitary gland and is regulated by hypothalamic prolactin-inhibiting hormone (e.g., dopamine) and prolactin-releasing hormone. Its normal reference range may vary depending on physiological conditions and life stages. So, what is the normal range for prolactin?

Normal Prolactin Reference Range

The normal reference range for prolactin varies across different physiological states. For example, typical reference values are as follows: non-pregnant women <1.14 mmol/L; early pregnancy: 3.64 mmol/L; second trimester: 7.28 mmol/L; third trimester: 18.20 mmol/L. Note that the normal reference range may vary slightly among hospitals and laboratories due to differences in assay kits and measurement methods.

If elevated prolactin levels result from physiological causes (e.g., pregnancy, breastfeeding, or stress), no treatment is required—levels typically return to normal once the physiological phase concludes. If hyperprolactinemia is drug-induced—for instance, by medications such as perphenazine or metoclopramide—temporary discontinuation of the offending agent (under medical supervision) often restores prolactin to baseline. In cases where a prolactin-secreting pituitary adenoma (prolactinoma) is responsible, surgical resection may be indicated, followed by postoperative monitoring and, if necessary, adjuvant radiotherapy or chemotherapy. Dopamine receptor agonists (e.g., cabergoline or bromocriptine) are first-line pharmacological treatments for patients with hyperprolactinemia who desire fertility. Dosage should be individualized according to clinical response and tolerability, with regular follow-up testing required.

Remember to avoid emotional stress, depression, and excessive rumination. Engage in regular, moderate physical exercise to strengthen your overall health. We hope this information has been helpful!