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Blood Chemistry 3

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Updated 2009-03-31 00:06

Blood Chemistry Tests

 

TermDefinition
Stationary CellA cell that stays in one place in the body: skin, muscles, bones, organs (heart, lungs, kidneys, etc.).
Circulating CellA cell that moves throughout the body by traveling in the blood.
Complete Blood Count (CBC)A lab test that provides information about cells circulating in the blood. It includes the number of RBC's, the amount of hemoglobin, and other measurements related to the RBC's.
Red Blood Cell (RBC)A cell that transports oxygen from the lungs to the body.
Red Blood Cell (RBC)An oval-shaped cell that contains hemoglobin.
Red Blood Cell (RBC)Low in anemia, bleeding, malnutrition, kidney disease.
Red Blood Cell (RBC)High in polycythemia, heart and lung disease, dehydration.
Hemoglobin (Hb or Hgb)An iron-rich protein that carries oxygen and makes the blood red.
Hemoglobin (Hb or Hgb)Low in anemia, bleeding, malnutrition, cirrhosis, cancer.
Hemoglobin (Hb or Hgb)High in dehydration, polycythemia.
Hematocrit (Hct)Reflects the amount of space in the blood occupied by RBC's.
Hematocrit (Hct)Low in anemia, bleeding, malnutrition, cirrhosis, cancer.
Hematocrit (Hct)High in dehydration, polycythemia, hemochromatosis.
Mean Corpuscle (Cell) Volume (MCV)The average size of the RBC's.
Mean Corpuscle (Cell) Volume (MCV)A test to detect anemia, thalassemia, malnutrition.
Mean Corpuscular Hemoglobin (MCH)The average amount of hemoglobin in each RBC.
Mean Corpuscular Hemoglobin (MCH)A test to detect anemia, thalassemia, malnutrition.
Mean Corpuscular Hemoglobin Concentration (MCHC)The average amount of hemoglobin in the RBC's compared to the average size of the RBC's. It is the ratio of the MCH to the MCV.
Mean Corpuscular Hemoglobin Concentration (MCHC)A test to detect anemia, thalassemia, malnutrition.
Red Cell Distribution Width (RDW)Degree of variation in the size of the RBC's.
Red Cell Distribution Width (RDW)A test to detect anemia, thalassemia, malnutrition.
DifferentialAn investigation of RBC's and WBC's under a microscope. It tells the relative numbers and appearances of the different cell types.
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TermDefinition
White Blood Cell (WBC)Helps the body fight illness or infection. As part of the immune system, it recognizes and fights things that are foreign to (not part of) the body.
White Blood Cell (WBC)Larger in size and smaller in number than RBC's.
White Blood Cell (WBC)5 types: neutrophils, lymphocytes, monocytes, eosinophils, basophils.
WBC / WBC DiffA test to detect infection, leukemia.
NeutrophilA WBC that protects the body from bacterial infections. It moves toward bacteria and then swallows them up so the bacteria cannot harm the body.
LymphocyteA WBC that protects the body against viruses, bacteria, and fungi.
B-CellA lymphocyte that produces antibodies that attack and destroy bacteria and viruses.
T-CellA lymphocyte that directly attacks viruses and bacteria and can stimulate the B-cells to produce antibodies.
MonocyteA WBC that consumes dead or damaged cells. Many of them work together as the body's "clean-up crew".
EosinophilA WBC that kills parasites and contributes to allergic reactions.
BasophilA WBC that releases histamines during allergic reactions.
PlateletThe smallest kind of blood cell. Groups of these sticky cells clump together and from a sticky mass that helps the blood clot.
PromyelocyteA cell type not usually found in the blood.
MetamyelocyteA cell type not usually found in the blood.
BlastA cell type not usually found in the blood.
Mean Platelet Volume (MPV)A measurement of the average size of the platelets. Higher numbers roughly indicate better platelet function.
Mean Platelet Volume (MPV)A test to detect bleeding and clotting disorders.
Platelet Count (Plt) A test to detect bleeding and clotting disorders.
Low Platelet Count (Low Plt)Thrombocytopenia. Associated with bleeding. Can be caused by rare inherited disorders, leukemia, autoimmune disorders (rheumatoid arthritis, lupus), and medications (aspirin, also known as acetylsalicylic acid, salicylate, or 2-(acetyloxy) benzoic acid).
High Platelet Count (High Plt)Less common. Often associated with clotting disorders like thrombocytopenia but can also happen in some cancers and following infections or other medical conditions.
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Reference:
   http://www.questdiagnostics.com/healthwise/files/cbc.pdf
   (PP1427 07/2005 version)

 

See Blood Chemistry or Blood Chemistry 2 for more.