Serum is the liquid and solute part of blood which doesn't assume a job in clotting.It might be characterized as blood plasma without fibrinogens. Serum incorporates all proteins not utilized in blood coagulating; all electrolytes, antibodies, antigens, hormones; and any exogenous substances (e.g., medications or microorganisms). Serum doesn't contain white platelets (leukocytes), red platelets (erythrocytes), platelets, or coagulating factors.The investigation of serum is serology. Serum is utilized in various demonstrative tests just as blood composing. Estimating the grouping of different atoms can be valuable for some applications, for example, deciding the helpful file of a medication up-and-comer in a clinical preliminary.