Your doctor will usually check your red blood cell count together with your other blood cell counts to look for conditions that cause low counts (anemia) or high counts. Many health conditions can ...

High eosinophil levels may indicate an immune reaction to infection, cancer, or allergens. Low eosinophil levels may result from alcohol intoxication or indicate an underlying hormone disorder.

Human immunodeficiency virus (HIV) attacks CD4 cells, which are a small part of the white blood cells. In acute HIV, white blood cell count may drop slightly but still look “normal.” A white blood ...

Red blood cell distribution width (RDW) blood test measures the amount of red blood cell variation in volume and size. However, RDW is not used as an isolated parameter when interpreting a complete ...