Blood is made up of red blood cells (RBCs), which carry oxygen and other materials to all tissues of the body; white blood cells (WBCs), which fight infection; and platelets, which play a part in the clotting of the blood.
These stem cells mature through stages into RBCs, WBCs, or platelets.
An increase in WBCs may occur in many conditions, including infection (viral, bacterial, fungal, and parasitic), allergy, leukemia, hemorrhage, traumatic tap, encephalitis, and Guillain-Barré syndrome.
This is accomplished by counting RBCs and WBCs in both blood and CSF.
This value is subtracted from the CSF WBC count to eliminate WBCs derived from hemorrhage or traumatic tap.
Diagnostic testing starts with a complete blood count (CBC) and differential, counting RBCs, white blood cells (WBCs) and measuring hemoglobin (Hgb), hematocrit (Hct), and other factors.