The Complete Blood Count

What is the main function of WBCs?

Fight infection.

Normal WBC range?

5,000-10,000

What is leukopenia?

Low WBC count

What is leukocytosis?

High WBC Count

Which WBC fights bacterial infections?

Neutrophils-40-70%

Which WBC fights viral infections?

Lymphocytes- 20-40%

Which WBC is associated with allergies and parasites?

Eosinophils — 1–5%

What do basophils do?

Play a role in inflammation and allergic responses.

What do monocytes do?

Fight infection and foreign substances.

What is the main function of RBCs?

Transport oxygen throughout the body and deliver CO₂ to the lungs.

Normal RBC count?

4..5–5.5 million

What is a low RBC count called?

Anemia

What is a high RBC count called?

Polycythemia

What does hemoglobin do?

Carries oxygen in the body.

Normal hemoglobin for women?

12–16 g/dL

Normal hemoglobin for men?

14-18g/dL

What does hematocrit measure?

The amount of RBCs compared with total blood volume.

Normal hematocrit for women?

37–47%

Normal hematocrit for men?

42-52%

What does MCV measure?

RBC size. Normal: 80–100 fL

What does MCH measure?

Amount of hemoglobin in an RBC. 27–33 pg

What does MCHC measure?

Concentration of hemoglobin in an RBC. 33–36 g/dL

What does RDW measure?

Variation in RBC size. 11–15%

What is the main function of platelets?

Help with clotting.

Normal platelet count?

150,000–400,000

What is thrombocytopenia?

Low platelets → increased bleeding risk.

What is thrombocytosis?

High platelets → increased clotting risk.