Pyridoxal-5-phosphate (P5P) is the active form of Vitamin B6, and it makes notable contributions to various physiological processes. It has a crucial part in metabolizing amino acids, creating ...

What Is a Prolactin Test? A prolactin (PRL) blood test measures how much of a hormone called prolactin you have in your blood. The hormone is made in your pituitary gland, which is located just below ...

Prolactin is a hormone involved in milk production in mammals. Levels typically increase during pregnancy. High prolactin levels outside pregnancy may indicate an underlying health problem. Prolactin ...