Complete Blood Count (CBC)

A complete blood count (CBC) is a blood test that measures the different cells in the blood, including red blood cells, white blood cells, and platelets. The CBC provides important information about a person’s overall health and can help diagnose a variety of medical conditions, including anemia, infections, and blood disorders.

The following components of the blood are measured during a CBC:

  1. Red blood cells (RBCs) – measure the number and size of red blood cells, which carry oxygen to the body’s tissues.
  2. Hemoglobin – measures the amount of oxygen-carrying protein in the blood.
  3. Hematocrit – measures the proportion of red blood cells to the total volume of blood.
  4. Mean corpuscular volume (MCV) – measures the average size of red blood cells.
  5. Mean corpuscular hemoglobin (MCH) – measures the average amount of hemoglobin in red blood cells.
  6. Mean corpuscular hemoglobin concentration (MCHC) – measures the average concentration of hemoglobin in red blood cells.
  7. Red Blood Cell Distribution Width (RDW) is a blood test that measures the variation in size and shape of red blood cells.
  8. Red Blood Cell Distribution Width-Standard Deviation (RDW-SD) is a blood test that measures the variation in size and shape of red blood cells, with a focus on the degree of variation in width.
  9. Mean Platelet Volume (MPV) is a blood test that measures the average size of platelets in the blood.
  10. Platelets – measure the number of small cells that help blood to clot.
  11. White blood cells (WBCs) – measure the number of different types of white blood cells, which play a role in fighting infections.
  12. Lymphocytes % is a blood test that measures the percentage of lymphocytes, a type of white blood cell, in the blood.
  13. Monocytes % is a blood test that measures the percentage of monocytes, a type of white blood cell, in the blood.
  14. Neutrophils % is a blood test that measures the percentage of neutrophils, a type of white blood cell, in the blood.
  15. Eosinophils % is a blood test that measures the percentage of eosinophils, a type of white blood cell, in the blood. Eosinophils play a key role in the immune system’s response to parasitic infections and allergic reactions.
  16. Basophils % is a blood test that measures the percentage of basophils, a type of white blood cell, in the blood. Basophils play a role in the immune system’s response to allergies and parasitic infections.
  17. Lymphocytes # is a blood test that measures the absolute number of lymphocytes, a type of white blood cell, in the blood.
  18. Monocytes # is a blood test that measures the absolute number of monocytes, a type of white blood cell, in the blood.
  19. Neutrophils # is a blood test that measures the absolute number of neutrophils, a type of white blood cell, in the blood.
  20. Eosinophils # is a blood test that measures the absolute number of eosinophils, a type of white blood cell, in the blood.
  21. Basophils # is a blood test that measures the absolute number of basophils, a type of white blood cell, in the blood.

A healthcare provider can interpret the results of a CBC and make recommendations for treatment or lifestyle changes as needed. The normal range for the results of a CBC may vary depending on the laboratory that performs the test. It is important to keep in mind that the results of a CBC can be influenced by factors such as age, gender, and overall health.

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