Complete Blood Count with Differential (CBC with Differential)

What Does a CBC Measure?

A CBC evaluates several key components of your blood: - **Red blood cells (RBCs):** Carry oxygen to tissues. - **Hemoglobin:** The protein in RBCs that transports oxygen. - **Hematocrit:** The percentage of blood volume made up of RBCs. - **Platelets:** Help with blood clotting. - **White blood cells (WBCs):** Fight infections and inflammation. - **Differential count:** The breakdown of WBC types (e.g., neutrophils, lymphocytes).

Why Might You Need a CBC?

Doctors order a CBC to check for signs of: - Anemia (low RBCs or hemoglobin). - Infections (e.g., high WBCs). - Blood disorders (e.g., leukemia, thrombocytopenia). - Kidney or liver issues (indirectly, through RBC/protein levels).

How Is a CBC Performed?

A small blood sample is drawn from a vein (usually in your arm). The sample is sent to a lab, where machines analyze it for RBCs, WBCs, platelets, and their proportions. No special preparation is needed, but fasting isn’t required for this test alone.

What Are Common Results?

Results may show: - **Low RBCs/hemoglobin:** Possible anemia. - **High WBCs:** Possible infection or inflammation. - **Low platelets:** Risk of bleeding. - **Abnormal WBC differential:** Could signal immune issues or other conditions.