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Blood Terms A-K PDF Print E-mail
Absolute neutrophil count (ANC) this is determined by adding the percentage of neutrophils in the blood with the percentage of bands in the blood, then multiplying that number by the white blood cell count and multiplying the product by 10. This number represents the number of neutrophils which are available for defending the body against infection. Also see “Determining your ANC”.
Anemia a decrease in red cells which contain hemoglobin. Hemoglobin, which contains iron, is necessary for carrying oxygen to the bodies’ cells.
Aplastic Anemia a rare but extremely serious disorder that results from the unexplained failure of the bone marrow to produce blood cells.
B-cells lymphocytes that produce antibodies which help to fight infections.
Bands immature neutrophils. These are usually counted as neutrophils when determining total neutrophils in the blood.
Bone Marrow – soft tissue within the bones where all the different blood cells are manufactures.
Bone Marrow Aspiration test in which a liquid sample of the bone marrow is removed by needle aspiration (suction) and examined or tested. Results from this test show the appearance of blood cell precursors. Cytogenetics and some other special tests require this type of liquid sample.
Bone Marrow Biopsy test in which a solid core of bone marrow is removed with a biopsy needle. The biopsy is helpful in determining the cellularity of the marrow, among other things.
Complete Blood Count (CBC) number or percent of blood cells, which includes white cells, red cells and platelets.
Chemotaxis (also known as neutrophil mobility) movement of the neutrophils toward bacteria or an area of the tissue damage. Neutrophils must be able to move to the particular part of the body to fight off infections.
Colony Stimulating Factor (also known as hematopoietic growth factors of cytokines) Substances produced by the body, which stimulate the production of certain blood cells. Some of these substances have been manufactured synthetically. Examples are granulocyte stimulating factors (F-Csf) and various Interleukins.
Cyclic or Intermittent Neutropenia when the neutrophil counts fluctuates between a normal and a low count. The timing of cycles averages about every 21 days, and last from 3 to 6 days, but can vary.
Differential Count this is the percent of different types of white blood cells in the body.
Granulocytes (also called neutrophils) white blood cells which fight bacteria infections.
Hematocrit (HCT) ratio of red cells to plasma in the blood; the portion of the blood’s total volume that is made up of red cells.
Hematology – the study of blood, blood forming cells and the disorders associated with them.
Hematopoiesis the production of red cells, white cells and platelets by the stem cells in the bone marrow.
Hemoglobin (HB or HGB) the oxygen carrying pigment of the red cells; binds with oxygen in the lungs and is carried to the body’s cells.
Hemorrhage bleeding from any site in the body.