Complete Blood Count (CBC) Quiz

Complete Blood Count (CBC)

• A set of medical laboratory tests that provide information about the cells in blood.
• Evaluates the counts of white blood cells (WBCs), red blood cells (RBCs), and platelets (PLTs).
• Reports the concentration of hemoglobin (Hb) and the hematocrit (HCT).
• Includes red blood cell indices and a white blood cell differential.

Uses of CBC

• Evaluates overall health and detects diseases and conditions, such as infections, anemia, and leukemia.
• Used as a broad screening test to determine general health status.
• Helps diagnose various diseases and conditions, such as anemia, infection, inflammation, bleeding disorder, or leukemia.
• Monitors the status of a disease or condition and the effectiveness of treatment after a diagnosis is established.
• Monitors treatment that is known to adversely affect blood cells, such as chemotherapy or radiation therapy.

Principle of CBC

• Counts and measures the size of cells by detecting and measuring electrical resistance when a liquid passes through an aperture.
• Cells impede the current and cause a measurable pulse.

Components of CBC

• Red blood cell count (RBC)
• Hemoglobin (Hgb)
• Hematocrit (Hct)
• Mean corpuscular volume (MCV)
• Red blood cell distribution width (RDW)
• Neutrophils
• Lymphocytes
• Monocytes
• Platelet Count (PLT)
• White blood cell (WBC)
• Mean corpuscular hemoglobin (MCH)
• Mean corpuscular hemoglobin concentration (MCHC)

Procedure

• Sample is collected by drawing blood into a tube containing an EDTA anticoagulant to stop its natural clotting.