Question 1

Which of the following can be evaluated only through the microscopic examination of a stained blood film?&#10;A) White blood cell (WBC) count&#10;B) Reticulocyte count&#10;C) Hemoglobin concentration&#10;D) Presence or absence of blood cell inclusions

Accepted Answer

The presence or absence of blood cell inclusions, such as Howell-Jolly bodies or Heinz bodies, can only be evaluated through the microscopic examination of a stained blood film. WBC count and hemoglobin concentration can also be measured using automated high-throughput instruments. Reticulocyte count can be evaluated using specialized stains and automated analyzers, but can also be estimated through visual examination of an unstained blood film.

Question 2

The primary function of platelets is to:&#10;A) Defend the body against bacterial invasion.&#10;B) Carry oxygen to tissues.&#10;C) Facilitate blood clotting.&#10;D) Regulate acid-base balance.

Accepted Answer

The primary function of platelets is to facilitate blood clotting. They help to seal injured blood vessels and prevent blood loss.

Question 3

Who is ultimately responsible for determining the specimen integrity before analysis?&#10;A) Clinical laboratory scientist&#10;B) Nursing staff&#10;C) Phlebotomist&#10;D) Specimen-processing personnel

Accepted Answer

Clinical laboratory scientists are trained and responsible for determining the integrity of a specimen before analysis. This includes checking for any visual abnormalities, making sure the specimen is properly labeled and packaged, and ensuring that the necessary amount and type of sample has been collected. The nursing staff, phlebotomist, and specimen-processing personnel may assist in the collection and handling of the specimen, but the ultimate responsibility lies with the laboratory scientist.

Question 4

The morphology of blood cells is important to evaluate:&#10;A) Every time a complete blood count (CBC) is requested on a patient&#10;B) When an instrument-generated flag is obtained&#10;C) When flag limits established by clinical laboratory scientists in the laboratory are exceeded&#10;D) When the white count is elevated

Accepted Answer

The answer of The morphology of blood cells is important...

Question 5

Hematology is the study of:&#10;A) Blood cells&#10;B) Serum electrolytes&#10;C) Plasma hormone levels&#10;D) Bacteria in the blood

Accepted Answer

Hematology is the study of blood cells, including red and white blood cells, platelets, and their formation, function, and diseases.

Question 6

Hematocrit is also called:&#10;A) White cell count&#10;B) Bone marrow examination&#10;C) Red blood cell (RBC) count&#10;D) Packed red cell volume

Accepted Answer

Hematocrit is a measure of the percentage of red blood cells in the blood. It is also called packed red cell volume, as it measures how much space in the blood is occupied by red blood cells. Options A and B are not correct, as they refer to different tests that measure different aspects of blood composition. Option C is partially correct, as hematocrit is a measure of the red blood cell count, but it specifically measures the percentage of red blood cells and not the total count.

Deck 1: An Overview of Clinical Laboratory Hematology