Deck 47: Assisting in the Analysis of Blood

Question 1

Which department of the laboratory performs H&H tests?

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

Answer 1

Hematology

Question 2

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

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

Answer 2

Creatinine

Question 3

Which of the following is a normal H&H for a female?

A) 30% and 11 g/dL
B) 36% and 14 g/dL
C) 52% and 17 g/dL
D) 35% and 11 g/dL

Answer 3

36% and 14 g/dL

Question 4

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 5

The ESR test results

A) are diagnostic for rheumatoid arthritis.
B) vary greatly between genders and as people age.
C) are obtained with a complex, automated test.
D) are reported in percentage per hour.

Question 6

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

Question 7

Granular leukocytes

A) have granules in the nucleus of the cell.
B) function primarily in the plasma.
C) act as phagocytes.
D) All of the above

Question 8

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) 45 g/dL.
C) 5 g/dL.
D) 45%.

Question 9

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) should be dried with the "heel" end up before staining.

Question 10

Erythrocytes have a typical ________ shape because of _______________________.

A) concave; the presence of oxygen
B) oval; their short life span
C) convex; adequate hemoglobin concentration
D) concave; their lack of a nucleus

Question 11

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 12

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

A) 50% to 65% segmented neutrophils
B) 0% to 7% band neutrophils
C) 25% to 40% lymphocytes
D) 50% to 70% basophils

Question 13

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

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

Question 14

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 15

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 16

When is administration of Rho(D) immune globulin absolutely necessary?

A) If an Rh-negative mother gives birth to an Rh-positive stillborn
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 17

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 18

In performance of a microhematocrit

A) whole coagulated blood must be used.
B) the capillary tube must be completely filled and sealed on one end.
C) the open end of the capillary tube should be sealed with clay before centrifuging.
D) the capillary tubes should be centrifuged in a labeled, sealed Vacutainer tube.

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 poikilocyte.
D) None of the above

Question 20

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 21

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

A) ESR
B) Hgb determination
C) CLIA-waived
D) CBC

Question 22

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

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

Question 23

____________ cells, the most numerous types of agranular leukocytes, stimulate the activity of other T lymphocytes.

Question 24

Which of the following are the most numerous type of T cell?

A) Natural killer T cells
B) Helper T cells
C) Suppressor T cells
D) Memory T cells

Question 25

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

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

Question 26

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

Question 27

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

A) Plasma
B) RBCs
C) WBCs
D) Buffy coat
E) Both C and D

Question 28

A(n) ________________ is performed by the immunohematology department to determine blood compatibility before a transfusion.

Question 29

Hemoglobin A_1c is measured to monitor

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

Question 30

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

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

Question 31

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 32

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 33

Which of the following leukocytes are associated with allergies?

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

Question 34

Hormones detected in a thyroid panel include

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

Question 35

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

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

Question 36

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 37

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 38

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 39

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

Question 40

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

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

Question 41

A low microhematocrit is seen in patients with ___________.

Question 42

Mrs. Grace Hernandez is suspected of having rheumatoid arthritis. Explain the ESR procedure to Mrs. Hernandez.

Question 43

You are responsible for teaching a new medical assistant in the practice how to perform a microhematocrit test. Summarize this procedure.

Question 44

A(n) ____________ is used to separate blood parts from plasma.

Question 45

Blowing on a blood slide smear to help it dry quickly can cause __________ to form.

Question 46

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

Question 47

Plasma makes up approximately 45% of blood by volume.

Question 48

Babies born to mothers with Rh-negative blood are at risk of developing __________.

Question 49

An RBC that is larger than normal is described as ______________.

Question 50

Patients with ________________ have an unusually large number of all blood cells.

Question 51

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

Question 52

A high level of _________ is indicative of an increased risk of heart disease.

Question 53

___________ is nitrogenous waste material from protein metabolism that collects in the bloodstream if the kidneys are not functioning properly.

Question 54

Explain the significance of the HbA_1c test in the control of diabetes mellitus. Include in your discussion the relationship between A_1c and blood glucose levels.

Question 55

The physician orders both liver and cardiac panels for Mr. John Seymour, a 48-year-old patient. Summarize the blood tests included.

Question 56

Fibrin creates a network of threadlike structures called __________ that begin clot formation.

Question 57

The ________ is the standard unit for reporting PT results; the other method is the time required, in seconds, for a clot to form in a blood specimen.

Question 58

List five studies included in a CBC.

Question 59

A(n) ____________ is an immature neutrophil.

Question 60

__________ cholesterol is known as "good" cholesterol because a high level seems to protect the body against heart attack.

Question 61

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

Question 62

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

Question 63

The life span of an erythrocyte is approximately 120 days.

Question 64

Blood is able to form a clot as the result of a coordinated process involving more than 50 blood factors and processes.

Question 65

The cytoplasm of lymphocytes stains purple.

Question 66

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 67

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

Question 68

B cells produce specific antibodies against a particular antigen.

Question 69

Fasting is necessary before cholesterol testing because HDL and LDL cholesterol are greatly affected by food consumption.

Question 70

The most important red cell index for classification of anemias as macrocytic or microcytic is the mean corpuscular volume.

Question 71

If the Vacutainer is not completely filled with blood, a FALSE (ESR) reading may result.

Question 72

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

Question 73

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

Question 74

An HDL cholesterol level over 20 mg/dL indicates a low risk for cardiac disease.

Question 75

Lavender-topped tubes are used for routine CBC counts.

Question 76

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

Question 77

Eosinophils are phagocytic and are closely associated with allergic reactions.

Question 78

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