The routine five-category blood test includes neutrophils, lymphocytes, monocytes, eosinophils, and basophils. Indicators such as red blood cells and platelets are also provided. The routine five classification of blood refers to the use of a blood cell analyzer to check the composition and percentage of cells in the blood. This technique divides white blood cells into the five categories mentioned above and detects the cell counts and percentages occupied, allowing for a better assessment of the patient’s condition. The five blood categories play an important role in determining diseases such as infection, inflammation, leukemia, tissue injury, trauma, post-surgery, acute blood loss, poisoning, and malignancy. However, certain factors may interfere with the results of the hemogram, such as low blood volume, prolonged specimen placement, specimen coagulation, and so on. Hematocrit also provides indicators of red blood cells, platelets, hemoglobin, and so on. This test should be performed under the supervision of a medical professional.