Know Your Blood Parameters: Prolactin

1. Parameter Name

   Prolactin

   
   

2. Test Type

   Blood

   
   

3. Normal Range

   Women: 4.8 – 23.3 ng/mL

   Men: 4.0 – 15.2 ng/mL

   
   

4. High Levels Indicate

   Pituitary adenomas, hypothyroidism, pregnancy, stress, certain medications (antipsychotics, antidepressants).

   
   

5. Low Levels Indicate

   Rare; may suggest pituitary dysfunction or hypothalamic disorders.

   
   

6. Why It's Tested

   To investigate causes of infertility, menstrual irregularities, galactorrhea, and suspected pituitary tumors.

   
   

7. Associated Symptoms (if abnormal)

   High: Irregular menstruation, galactorrhea, infertility, decreased libido.

   Low: Usually asymptomatic.

   
   

8. What To Do If Abnormal

   Repeat test fasting and morning sample; if elevated, perform pituitary imaging and thyroid function tests.

   
   

9. Common Conditions Related

   Prolactinoma, hypothyroidism, medication-induced hyperprolactinemia.

   
   

10. Nutrition or Lifestyle Connection

    Manage stress, avoid excessive nipple stimulation, monitor medication effects.

    
    

11. References (APA Format)

Melmed, S. et al. (2016). Williams Textbook of Endocrinology (13th ed.). Elsevier.

MedlinePlus. (2023). Prolactin Test. https://medlineplus.gov/lab-tests/prolactin-test/