Deck 44: Assisting in the Analysis of Blood

Question 1

Which component of the complete blood count is not necessary to calculate the red cell indices?

A) Differential
B) Hemoglobin
C) Hematocrit
D) Erythrocyte count

Answer 1

Differential

Question 2

Which department of the laboratory performs H&H tests?

A) Hematology
B) Cytology
C) Immunology
D) Chemistry

Answer 2

Hematology

Question 3

A properly prepared wedge smear

A) has blood covering one-half to three-quarters of the slide.
B) is dried quickly with forceful blowing.
C) has a blunt edge.
D) can have small streaks or holes in smear.

Answer 3

has blood covering one-half to three-quarters of the slide.

Question 4

Increases in the RBC count are found in which of the following?

A) Anemia
B) Infection
C) Dehydration
D) Liver disease

Question 5

The ESR test results

A) are diagnostic for rheumatoid arthritis.
B) are an indicator of inflammation in the body.
C) are obtained with a complex, automated test.
D) are reported in percentage per hour.

Question 6

Which of the following is not detected in a liver panel test?

A) GGT
B) ALT
C) ALP
D) CBC

Question 7

Dr. Lim orders a CPK draw on Mr. Roberts. What do elevated CPK levels indicate?

A) Liver disease
B) Possible MI
C) Dehydration
D) A problem with glucose metabolism

Question 8

When is administration of RhoGAM immune globulin absolutely necessary?

A) If an Rh-negative mother gives birth to an Rh-positive baby
B) If an Rh-positive mother gives birth to an Rh-negative baby
C) If both mother and baby are Rh negative
D) If an Rh-negative man fathers an Rh-negative baby

Question 9

Which statement is true about leukocytes?

A) Leukocytes are the largest circulating blood cells.
B) Granulocytes have segmented nuclei.
C) Neutrophils are the most numerous WBCs in circulation.
D) Bacterial infections stimulate increased production of neutrophils.
E) All of the above are true.

Question 10

Which of the following is an abnormal value for a differential?

A) 50% to 65% segmented neutrophils
B) 0% to 3% eosinophils
C) 25% to 40% lymphocytes
D) 50% to 70% basophils

Question 11

The buffy coat

A) is a layer of thrombocytes between the plasma and cells in a centrifuged microhematocrit tube.
B) can be seen in a centrifuged microhematocrit tube but not in a centrifuged Vacutainer™ tube.
C) is white.
D) is removed for Wright's staining during the differential portion of the CBC.

Question 12

Which of the following is a normal hemoglobin for a female?

A) 11 g/dL
B) 14 g/dL
C) 17 g/dL
D) 9.5 g/dL

Question 13

While Mr. Chakrabarti's hematocrit sample is spinning in the centrifuge, you perform an automated hemoglobin test on a sample of his blood and record the value as 15 g/dL. You do a quick mental calculation and expect that the hematocrit value will be approximately

A) 5%.
B) 15%.
C) 30%.
D) 45%.

Question 14

Troponin is a component of a(n) ________ panel.

A) liver
B) renal
C) cardiac
D) electrolyte

Question 15

Which of the following is a normal adult WBC count?

A) 3,000 cells/mm³
B) 1,500 cells/mm³
C) 10,000 cells/mm³
D) 12,000 cells/mm³

Question 16

TSH levels are assessed to determine the function of what organ(s)?

A) Pituitary gland
B) Pancreas
C) Liver
D) Kidneys

Question 17

A hematocrit reading of 37 indicates what?

A) The patient has a hemoglobin level of 12.
B) RBCs account for 37% of the total blood volume.
C) WBCs account for 37% of the total blood volume.
D) RBCs account for 63% of the total blood volume.

Question 18

A blood test that analyzes the ability of the kidneys to perform their function is the

A) albumin levels.
B) BUN.
C) FBS.
D) GTT.

Question 19

Platelets

A) assist in the delivery of oxygen to tissues.
B) are elevated in thrombocytopenia.
C) are fragments of a larger cell called a megakaryocyte.
D) None of the above

Question 20

Which of the following tests is used to determine renal function?

A) Ferritin
B) Total bilirubin
C) pH
D) Creatinine

Question 21

Hemoglobin A_1c is measured to monitor

A) anemia.
B) transfusion reactions.
C) diabetes.
D) hemolytic disease of the newborn.

Question 22

The smallest of the formed elements in the peripheral blood is a cell fragment that assists with clotting; it is known as a(n)

A) lymphocytes.
B) red blood cells.
C) platelet.
D) monocyte.

Question 23

Which of the following makes up approximately 55% of blood by volume?

A) Erythrocytes
B) Leukocytes
C) Thrombocytes
D) Plasma

Question 24

Microscopically, which of the following cells have large, dark, blue-black granules and contain histamine?

A) Lymphocytes
B) Basophils
C) Eosinophils
D) Monocytes

Question 25

Using capillary blood from a finger, the Cholestech LDX analyzer is capable of measuring which of the following?

A) HDL, LDL, and VLDL
B) TC/HDL ratio
C) Glucose
D) All of the above

Question 26

Which of the following tests is used for the initial screening of a patient for diabetes type 2?

A) Fasting blood glucose
B) Blood glucose tolerance test
C) Glycosylated hemoglobin A_1c
D) All of the above

Question 27

Which statement is true about HDL?

A) It transports cholesterol.
B) It is referred to as the "bad" cholesterol.
C) If elevated, it can result in a greater risk of heart disease.
D) All of the above are true.

Question 28

This instrument is used to separate blood cells from plasma.

A) Incubator
B) Centrifuge
C) Microscope
D) All of the above

Question 29

Hormones detected in a thyroid panel include

A) thyroxine.
B) triiodothyronine.
C) thyroid-stimulating hormone.
D) All of the above

Question 30

Which of the following leukocytes are associated with allergies?

A) Eosinophils
B) Basophils
C) Polymorphonuclear neutrophils
D) All of the above

Question 31

Patients with this condition produce an unusually large number of red blood cells.

A) Anemia
B) Inflammation
C) Polycythemia vera
D) Diabetes

Question 32

Increases in this test may indicate conditions such as acute and chronic infections, rheumatoid arthritis, tuberculosis, hepatitis, cancer, multiple myeloma, rheumatic fever, and lupus erythematosus.

A) PT
B) ESR
C) CBC
D) HDL

Question 33

Which of the following tests measures the time it takes blood to form a fibrin clot?

A) ESR
B) Hgb determination
C) PT
D) CBC

Question 34

A patient who has a higher number of platelets is diagnosed with

A) thrombocytopenia.
B) thrombocytosis.
C) leukocytosis.
D) None of the above

Question 35

In emergencies, if there is no time for the laboratory to perform a type and cross-match, which type of blood is administered?

A) Type A positive
B) Type B negative
C) Type AB positive
D) Type O negative

Question 36

After centrifugation on a microhematocrit test, which of the following will be found in the center of the tube?

A) Plasma
B) RBCs
C) Serum
D) Buffy coat

Question 37

A low microhematocrit is seen in patients with what condition?

A) Anemia
B) Inflammation
C) Possible heart attack
D) Diabetes

Question 38

T cells and B cells are a subclassification of which of the following?

A) Monocytes
B) Lymphocytes
C) Erythrocytes
D) All of the above

Question 39

An RBC that is larger than normal is described as

A) microcytic.
B) macrocytic.
C) normocytic.
D) normochromic.

Question 40

The name used to describe an immature neutrophil.

A) Eosinophil
B) Polymorphonuclear cell
C) Megakaryocyte
D) Band

Question 41

Rh-positive babies born to mothers with Rh-negative blood are at risk of developing what condition?

A) HDN
B) Anemia
C) ESR
D) HDL

Question 42

AST and ALT testing is done to monitor potential liver damage in patients receiving statin drugs.

Question 43

Increases in the WBC count that are not related to disease are seen in pregnant women and individuals facing extreme stress.

Question 44

Lavender-topped tubes are used for routine CBC tests.

Question 45

If a capillary tube is not plugged, it must be filled with a special clay before centrifugation.

Question 46

An RBC with a normal amount of hemoglobin is said to be hyperchromic.

Question 47

If the shape of RBCs shows significant variation from normal, the alteration in shape is called thrombocytopenia.

Question 48

Hemoglobin A_1c determination is more useful than blood glucose measurement in the management of diabetes, because it provides information on the average blood sugar level over a 2- to 3-month period.

Question 49

An HDL cholesterol level over 20 mg/dL is abnormal.

Question 50

The life span of an erythrocyte is approximately 120 days.

Question 51

Blood type O is considered the "universal donor," because no anti-A or anti-B antibodies are found in the plasma.

Question 52

The WBC count is lowest in newborns and highest in adults.

Question 53

Plasma makes up approximately 45% of blood by volume.

Question 54

A test that determines long-range blood glucose control is the

A) ESR.
B) PT.
C) A1c.
D) FBS.

Question 55

Eosinophils are associated with allergic reactions.

Question 56

B cells produce specific antibodies against a particular antigen.