The Peripheral Smear Examination test assesses the blood's various components. The smear looks at red blood cells, white blood cells, and platelets, as well as any additional abnormalities like parasites. Unexplained jaundice, unexplained anaemia, unclear fever, and acute infection all require a blood smear test to determine the reason. A variety of disorders can influence the number and appearance of blood cells. For example, decreased RBCs may indicate anaemia, while an increased number of WBCs may indicate infection. When a blood smear test reveals the proper quantity, size, and shape of blood cells, it is considered normal. When cells have an aberrant shape, size, or number, the results are deemed abnormal.