A differential blood count is a blood test to check your white blood cell levels, which can indicate the presence of infection, disease, or an allergic reaction. Your doctor might order it as part of ...

A blood differential test can detect abnormal or immature cells. It can also diagnose an infection, inflammation, leukemia, or an immune system disorder. Your doctor may order a blood differential ...

White blood cells are an important part of your body’s immune system. They’re responsible for protecting your body against infections and invading organisms. You have five types of white blood cells: ...