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 ...

A high red blood cell count can occur for many reasons, including excessive cell production, changes in blood volume, or underlying medical conditions. Sometimes, the cause is unknown. Erythrocytes, ...

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 ...

Testing for white blood cell count and white cell differentials is an important part of leukemia diagnosis. But even after diagnosis, your white blood cell count helps monitor disease progression and ...