1. What is a CBC?

What does CBC stand for?

Complete Blood Count

What is the normal WBC count range?

4.0-11.0 x 10^9 /L

Which infections increase WBC?

Bacterial infections increase WBC.

Which infections decrease WBC?

Viral infections decrease WBC.

What is the function of neutrophils?

Neutrophils help fight bacterial infections.

What are red blood cells also known as?

Erythrocytes.

What do red blood cells deliver to the body's tissues?

Oxygen.

What is the normal RBC count for males?

4.7–6.1 × 10^12/L.

What is the hemoglobin range for males?

140–180 g/L.

What happens if hemoglobin levels are low?

You are considered anemic.

What is hematocrit (HCT)?

A calculated parameter of blood volume.

What does the rule of three in HCT checks involve?

RBC x 3 = Hgb

Hgb x 3 = Hct ± 3.

What does MCV stand for?

Mean Corpuscular Volume.

What is the normal range for MCV?

80-100 fL.

How is MCV calculated?

MCV = (Hct ÷ RBC) × 1000.

What does MCH stand for?

Mean Corpuscular Hemoglobin.

What is the normal range for MCH?

27–31 pg.

How is MCH calculated?

MCH = (Hgb ÷ RBC).

What does MCHC stand for?

Mean Corpuscular Hemoglobin Concentration.

What is the normal range for MCHC?

320-360 g/L.

What conditions can cause high MCHC?

Spherocytosis, hemolytic anemia, burns.

What is a normal platelet count range?

150–450 × 10^9/L.

What is the significance of RDW?

It indicates the range of red blood cell volume and size.

What is the normal RDW range?

11.5%–14.5%.

What does MPV stand for?

Mean Platelet Volume.

What does a high MPV indicate?

Presence of large or giant platelets.

What is the normal range for % neutrophils?

40-70%.

What do lymphocytes help the body fight off?

Infections.

What is the normal range for % lymphocytes?

20-40%.

What is the function of monocytes?

They fight infections and help eliminate dead cells.

What is the normal range for % monocytes?

2-8%.

What do eosinophils combat?

Multicellular parasites and certain infections.

What is the normal range for % eosinophils?

1-4%.

What are basophils responsible for?

Fighting fungal and bacterial infections.

What is the normal range for % basophils?

0.5-1%.

What are relative and absolute counts in WBC differential?

Relative count is the percentage of each WBC; absolute count is the actual number.

How is absolute count calculated?

By multiplying each WBC percentage by the total WBC count.

If WBC is 5.0 × 10^9/L and segmented neutrophils are 40%, what is the absolute neutrophil count?

2.0.

What does a high RDW indicate?

Possible anemia.

What shape are red blood cells?

Bi-concave discs.

How long do red blood cells typically circulate?

Approximately 120 days.

What happens to red blood cells after their lifespan?

They are engulfed by macrophages.

What does hemoglobin carry from organs back to the lungs?

Carbon dioxide.

What type of cell are memory lymphocytes?

Long-lived B and T cells.

What is the average size of red blood cells measured by?

Mean Corpuscular Volume (MCV).

What are the 5 types of WBC?

Neutrophils, lymphocytes, monocytes, eosinophils, basophils.

What does a low platelet count indicate?

Possible diseases like ITP or TTP.

What occurs if absolute counts do not total the WBC?

There may be an error in the calculation.