QBC Star

Question 1

What is the most frequently ordered Lab

Answer 1

CBC

Question 2

RBC Indices

Answer 2

• Mean corpuscular Volume (MCV)
• Mean Corpuscular Hgb (MCH)
• Mean Corpuscular Hgb concentration (MCHC)
• RBC Distribution Width (RDW)

Question 3

Red Blood Count ranges in adults

Answer 3

Male: 4.5-5.9 x 106 cell/uL
Females: 4.5-5.1 x 106 cells/uL

Question 4

Normal Adult Hemoglobin ranges in adults

Answer 4

Males: 14-17.5 g/dL

Females> 12.3-15.3 g/dL

Question 5

What is the critical low value for hemoglobin?

Answer 5

< 8 g/dL

Question 6

What is the assessment of the size and HgB content of RBC?

Answer 6

Mean Corpuscular Volume (MCV)

Question 7

Normal range for mean corpuscular volume?

Answer 7

76-96fL/cell

Question 8

What is an associated with an increase the MCV ?

Answer 8

Vitamin B12 or folate deficiency

Question 9

What is associated with a decrease in MCV?

Answer 9

Abnormality in Hgb synthesis. Most likely caused by an iron deficiency.

Question 10

What is the normal range for Mean Corpuscular Hemoglobin (MCH)

Answer 10

27-32 pg/cell

Question 11

Increase in Mean Corpuscular Hemoglobin?

Answer 11

Vitamin B12 or folate deficiency

Question 12

Decrease in Mean Corpuscular Hemoglobin?

Answer 12

Iron Deficiency.

Question 13

What is the formula for Mean Corpuscular Hemoglobin?

Answer 13

MCH = Hgb x 10 / RBC count

Question 14

What is the formula for Mean Corpuscular Hemoglobin Concentration (MCHC)?

Answer 14

MCHC = Hgb/Hct x 100

Question 15

What is the normal range for platelet count?

Answer 15

150,000 - 400,000

Question 16

What is an abnormally high platelet count called?

Answer 16

thrombocytosis

Question 17

What can cause thrombocytosis?

Answer 17

Splenectomy, Trauma, Iron Deficiency Anemia, or Cirrhosis

Question 18

What is an abnormally low platelet count called?

Answer 18

Thrombocytopenia

Question 19

What is the critical low value for Platelets?

Answer 19

< 20,000

Question 20

When is thrombocytopenia seen?

Answer 20

TTP, DIC, Leukemia, and Metastatic Cancers

Question 21

What is the normal White Blood Cell Count

Answer 21

4.5 - 11.0 x 1.3

Question 22

What is the critical low value for WBCs

Answer 22

< 2,000

Question 23

What can cause leukopenia?

Answer 23

Bone Marrow deficiency (tumor, infection)
Collagen-vascular diseases
Disease of the liver or spleen
Radiation therapy or exposure

Question 24

What can cause leukocytosis?

Answer 24

• Anemia
• Bone Marrow Transplant
• Infectious Diseases
• Leukemia
• Tissue Damage
• Inflammatory Diseases

Question 25

Agranular Lymphocytes

Answer 25

Bands

Question 26

The ratio of the volume of erythrocytes to that of whole blood

Answer 26

Hematocrit

Question 27

Normal Hematocrit value for men and women

Answer 27

Male: 42% - 52%
Female: 37% - 47%

Question 28

Hematocrit value above the reference interval of age and sex

Answer 28

Polycythemia

Question 29

Mean Corpuscular Hemoglobin Concentration

Answer 29

MCHC = Hgb/Hct x 100

Question 30

Spontaneous bleeding can occur at what level, this is considered life-threatening

Answer 30

20,000 per microliter

Question 31

Three types of granulocytes

Answer 31

Neutrophil: Most abundant

Eosinophil: Inflammatory response

Basophil: Histamine, heparin, platelet activating factor

Question 32

used to describe malignant appearing lymphocyte cells

Answer 32

Atypical Lymphocytes

Question 33

Used to describe benign or formed lymphocytes

Answer 33

Reactive Lymphocytes

Question 34

Causes of reactive lymphocytes

Answer 34

Viral - HIV, chicken pox, EBV, influenza, rubella
Bacterial - Pertussis, Parathyroid fever
Drug Reaction - During recovery from acute infection