What is meant by serum? Write the use of serum.or Write short note on serum.

Plasma without fibrinogen is called serum. It is used for diagnosis of various kinds of diseases. 

The human serum is a circulating carrier of exogenous and endogenous liquids in the blood. It allows substances to stick to the molecules within the serum and be buried within it. Human serum thus helps in the transportation of fatty acids and thyroid hormones which act on most of the cells found in the body.

The serum is designed to nourish, protect, and hydrate your skin, a face serum is a great next step after cleansing and before moisturizing. Let's get into the benefits of using a face serum and how different kinds of serums can benefit your skin.

Serum is used in numerous diagnostic tests as well as blood typing. Measuring the concentration of various molecules can be useful for many applications, such as determining the therapeutic index of a drug candidate in a clinical trial. To obtain serum, a blood sample is allowed to clot (coagulation).