Question 1

The platelet count from the automated cell counter is 80 * 109/L. Platelet satellites around neutrophils are observed on the blood film estimate. A sodium citrate tube is drawn, and the count reads 300 *109/L from the cell counter. What platelet count * 109/L should be reported?

Accepted Answer

A)  80 
B)  300 
C)  330 
D)  The estimated count from the blood film

Question 2

Which of the following red cell indices support microcytic hypochromic red cell morphology?

Accepted Answer

The answer of Which of the following red cell indices...

Question 3

A hemoglobin of 19 g/dL is normal for which of the following patients?

Accepted Answer

A)  A newborn 
B)  A 2-year-old child 
C)  A female adult 
D)  A male adult

Question 4

For which patient is a hemoglobin of 10.5 g/dL normal?

Accepted Answer

A)  A newborn 
B)  A 2-year-old child 
C)  A female adult 
D)  A male adult

Question 5

Manual cell counting methods in automated hematology laboratories are used for all of the following except:

Accepted Answer

A)  Routine testing 
B)  Very low counts 
C)  Malfunctioning automated instruments 
D)  Counting spinal fluids

Question 6

In the center square on one side of a hemocytometer, 100 platelets were found; 200 were found in the center square on the other side. Select the best course of action.

Accepted Answer

A)  Report the count as 150 *109/L. 
B)  Verify the count by estimating the platelet number on the blood film. 
C)  Recount the hemocytometer on a phase microscope. 
D)  Repeat the procedure-the two counts are not close enough.

Question 7

On a standard reticulocyte preparation with new methylene blue, 100 cells are counted containing blue-stained granulofilamentous material. The red blood count is 3.22 * 1012/L, and the hematocrit is 30%. Calculate the MCV.

Accepted Answer

A)  80 fL 
B)  93 fL 
C)  98 fL 
D)  108 fL

Question 8

Why is it important to have a scrupulously clean hemocytometer when manually counting platelets?

Accepted Answer

A)  So few platelets exist that they can be missed if dirt is present. 
B)  They are so refractile, they can be confused with dirt. 
C)  Their small size makes them easily confused with dirt. 
D)  They are easily confused with the red cells that are present.

Question 9

On a standard reticulocyte preparation with new methylene blue, 100 cells are counted containing blue-stained granulofilamentous material. The red blood count is 3.22 *1012/L, and the hematocrit is 30%. Calculate the corrected reticulocyte count.

Accepted Answer

A)  1.5% 
B)  3.0% 
C)  6.7% 
D)  15.0%

Question 10

Interpret the following results (all tests performed manually) on an adult female named Mary Jones. 
RBC: 3.22*1012/L
Hemoglobin: 16.0 g/dL
Hematocrit: 30.0%

Accepted Answer

A)  All are normal. 
B)  All are decreased. 
C)  Hemoglobin is elevated and other two are normal. 
D)  Values do not agree with the "rule of three."

Question 11

Diagnostic testing at or near the site of patient care is known as:

Accepted Answer

A)  Preanalytic testing 
B)  Point-of-care testing (POCT) 
C)  Neutral-site testing 
D)  Clinical Laboratory Improvement Amendments (CLI
A)  testing

Question 12

On a standard reticulocyte preparation with new methylene blue, 100 cells are counted containing blue-stained granulofilamentous material. The red blood count is 3.22 * 1012/L, and the hematocrit is 30%. Using information determined from Questions 23 through 27, what is the correct interpretation for this patient's condition?

Accepted Answer

A)  Microcytic anemia with inadequate bone marrow response 
B)  Macrocytic anemia with adequate bone marrow response 
C)  Normocytic anemia with inadequate bone marrow response 
D)  Normocytic anemia with adequate bone marrow response

Question 13

Ten nucleated red blood cells (NRBCs) are found in a blood film when differentiating 100 white cells. What is the corrected white blood count if the automated cell counter printed a count of 10.0* 109/L?

Accepted Answer

A)  0.91* 109/L 
B)  9.1* 109/L 
C)  91 * 109/L 
D)  Ten NRBCs not enough to require a correction

Question 14

On a standard reticulocyte preparation with new methylene blue, 100 cells are counted containing blue-stained granulofilamentous material. The red blood count is 3.22 * 1012/L, and the hematocrit is 30%. Calculate the reticulocyte production index (RPI).

Accepted Answer

A)  1.5 
B)  2.7 
C)  3.4 
D)  13.4

Question 15

The following RBC indices are obtained on a patient when calculated using results from manual methods: 
MCV: 73 fL
MCH: 24 pg
MCHC: 33.4 g/dL
When the stained blood film is evaluated, the RBCs are normocytic normochromic. What conclusion can be made from this information?

Accepted Answer

A)  The hematocrit is too low. 
B)  The hemoglobin is too low. 
C)  The red count is too high. 
D)  It is impossible to come to any conclusion.

Question 16

Which of the following can cause a falsely increased ESR?

Accepted Answer

A)  Concentration of anticoagulant increased 
B)  Tube not totally vertical 
C)  Tuberculosis 
D)  Increased plasma viscosity

Question 17

Any of the following could be an explanation for the invalid hemoglobin for Mary Jones (Questions 13 through 16) except:

Accepted Answer

A)  The blood sample is hemolyzed. 
B)  Lipemia is present in the plasma. 
C)  The patient has hemoglobin S (Hb S). 
D)  The patient's white count is 150.0 *109/L.

Exam 14: Routine and Point-Of-Care Testing in Hematology: Manual and Semiautomated Methods

The platelet count from the automated cell counter is 80 * 10⁹/L. Platelet satellites around neutrophils are observed on the blood film estimate. A sodium citrate tube is drawn, and the count reads 300 10⁹/L from the cell counter. What platelet count 10⁹/L should be reported?

Which of the following red cell indices support microcytic hypochromic red cell morphology?

A hemoglobin of 19 g/dL is normal for which of the following patients?

For which patient is a hemoglobin of 10.5 g/dL normal?

Manual cell counting methods in automated hematology laboratories are used for all of the following except:

In the center square on one side of a hemocytometer, 100 platelets were found; 200 were found in the center square on the other side. Select the best course of action.

On a standard reticulocyte preparation with new methylene blue, 100 cells are counted containing blue-stained granulofilamentous material. The red blood count is 3.22 * 10^12/L, and the hematocrit is 30%. Calculate the MCV.

Why is it important to have a scrupulously clean hemocytometer when manually counting platelets?

On a standard reticulocyte preparation with new methylene blue, 100 cells are counted containing blue-stained granulofilamentous material. The red blood count is 3.22 *10^12/L, and the hematocrit is 30%. Calculate the corrected reticulocyte count.

Interpret the following results (all tests performed manually) on an adult female named Mary Jones. RBC: 3.22*10¹²/L Hemoglobin: 16.0 g/dL Hematocrit: 30.0%

Diagnostic testing at or near the site of patient care is known as:

Ten nucleated red blood cells (NRBCs) are found in a blood film when differentiating 100 white cells. What is the corrected white blood count if the automated cell counter printed a count of 10.0* 10⁹/L?

On a standard reticulocyte preparation with new methylene blue, 100 cells are counted containing blue-stained granulofilamentous material. The red blood count is 3.22 * 10^12/L, and the hematocrit is 30%. Calculate the reticulocyte production index (RPI) .

The following RBC indices are obtained on a patient when calculated using results from manual methods: MCV: 73 fL MCH: 24 pg MCHC: 33.4 g/dL When the stained blood film is evaluated, the RBCs are normocytic normochromic. What conclusion can be made from this information?

Which of the following can cause a falsely increased ESR?

Any of the following could be an explanation for the invalid hemoglobin for Mary Jones (Questions 13 through 16) except:

Exam 14: Routine and Point-Of-Care Testing in Hematology: Manual and Semiautomated Methods

The platelet count from the automated cell counter is 80 * 109/L. Platelet satellites around neutrophils are observed on the blood film estimate. A sodium citrate tube is drawn, and the count reads 300 *109/L from the cell counter. What platelet count * 109/L should be reported?

Which of the following red cell indices support microcytic hypochromic red cell morphology?

A hemoglobin of 19 g/dL is normal for which of the following patients?

For which patient is a hemoglobin of 10.5 g/dL normal?

Manual cell counting methods in automated hematology laboratories are used for all of the following except:

In the center square on one side of a hemocytometer, 100 platelets were found; 200 were found in the center square on the other side. Select the best course of action.

On a standard reticulocyte preparation with new methylene blue, 100 cells are counted containing blue-stained granulofilamentous material. The red blood count is 3.22 * 1012/L, and the hematocrit is 30%. Calculate the MCV.

Why is it important to have a scrupulously clean hemocytometer when manually counting platelets?

On a standard reticulocyte preparation with new methylene blue, 100 cells are counted containing blue-stained granulofilamentous material. The red blood count is 3.22 *1012/L, and the hematocrit is 30%. Calculate the corrected reticulocyte count.

Interpret the following results (all tests performed manually) on an adult female named Mary Jones. RBC: 3.22*1012/L Hemoglobin: 16.0 g/dL Hematocrit: 30.0%

Diagnostic testing at or near the site of patient care is known as:

Ten nucleated red blood cells (NRBCs) are found in a blood film when differentiating 100 white cells. What is the corrected white blood count if the automated cell counter printed a count of 10.0* 109/L?

On a standard reticulocyte preparation with new methylene blue, 100 cells are counted containing blue-stained granulofilamentous material. The red blood count is 3.22 * 1012/L, and the hematocrit is 30%. Calculate the reticulocyte production index (RPI) .

The following RBC indices are obtained on a patient when calculated using results from manual methods: MCV: 73 fL MCH: 24 pg MCHC: 33.4 g/dL When the stained blood film is evaluated, the RBCs are normocytic normochromic. What conclusion can be made from this information?

Which of the following can cause a falsely increased ESR?

Any of the following could be an explanation for the invalid hemoglobin for Mary Jones (Questions 13 through 16) except:

The platelet count from the automated cell counter is 80 * 10⁹/L. Platelet satellites around neutrophils are observed on the blood film estimate. A sodium citrate tube is drawn, and the count reads 300 10⁹/L from the cell counter. What platelet count 10⁹/L should be reported?

On a standard reticulocyte preparation with new methylene blue, 100 cells are counted containing blue-stained granulofilamentous material. The red blood count is 3.22 * 10^12/L, and the hematocrit is 30%. Calculate the MCV.

On a standard reticulocyte preparation with new methylene blue, 100 cells are counted containing blue-stained granulofilamentous material. The red blood count is 3.22 *10^12/L, and the hematocrit is 30%. Calculate the corrected reticulocyte count.

Interpret the following results (all tests performed manually) on an adult female named Mary Jones. RBC: 3.22*10¹²/L Hemoglobin: 16.0 g/dL Hematocrit: 30.0%

Ten nucleated red blood cells (NRBCs) are found in a blood film when differentiating 100 white cells. What is the corrected white blood count if the automated cell counter printed a count of 10.0* 10⁹/L?

On a standard reticulocyte preparation with new methylene blue, 100 cells are counted containing blue-stained granulofilamentous material. The red blood count is 3.22 * 10^12/L, and the hematocrit is 30%. Calculate the reticulocyte production index (RPI) .