Cytopenia

A reduction in the number of blood cells.

Erythrocytosis

An increase in the number of red blood cells in the bloodstream.

Hematuria

The presence of blood in the urine.

Leukocytosis

An increased number of white blood cells in the blood.

Pancytopenia

A decrease in the number of red and white blood cells, as well as platelets.

Thrombosis

The formation or presence of a blood clot in a blood vessel.

Hematocrit

The proportion of the blood that consists of red blood cells, expressed as a percentage.