The peripheral smear examination test analyses the various blood constituents. The smear assesses the platelets, white blood cells, and red blood cells in addition to other abnormalities such the presence of parasites. The blood smear test is recommended to determine the source of severe illness, unexplained fever, unexplained anaemia, and jaundice. Numerous disorders can have an impact on the quantity and appearance of blood cells. For instance, a type of anaemia may be indicated by reduced RBCs, whereas an infection may be indicated by an increase in WBCs. When the blood sample includes the ideal quantity, size, and form of blood cells, the blood smear test is considered to be normal.