You may have hematuria due to an infection, such as a urinary tract infection, or recent sexual activity. Long-term conditions, such as viral hepatitis, can also cause red blood cells in your pee. Red ...

If your doctor tests your urine and finds too many leukocytes, it could be a sign of infection. Leukocytes are white blood cells created in the bone marrow and found in your blood and tissue. They are ...

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 ...