Collagen is a hard, insoluble and fibrous protein that makes up one-third of the protein in the human body. 3 In the majority of collagens, the molecules are packed together to form very similar long thin fibrils. 4. Collagen is the most common protein found in mammals.ere are some key points about collagen. More detail and supporting information is in the main article. 25-27. 1  Protein makes up around 20% of the body's mass, and collagen makes up around 30% of the protein in the human body.
A prolactin test is a blood test that measures the level of the hormone in your body. Find a obsetrician or a gynecologist or a endocrinologist near you.
Hyperprolactinemia is a condition in which a person has higher-than-normal levels of the hormone prolactin in the blood. The main function of prolactin is to stimulate breast milk production after childbirth, so high prolactin levels are normal in pregnancy.