Basic Hematological Methods of Examination: Week 2 Quiz

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Questions and Answers

What is the main purpose of a White Blood Cell (WBC) count in a CBC test?

To detect hidden infections in the body (correct)

To measure the concentration of hemoglobin in the blood

To assess the erythropoietic activity of the bone marrow

To monitor the effectiveness of chemotherapy in cancer patients

Why is a Reticulocyte count performed in hematological examinations?

To assess the percentage of each type of White Blood Cells

To evaluate the erythropoietic activity of the bone marrow (correct)

To monitor the effectiveness of radiation therapy

To determine the concentration of hemoglobin in the blood

Which component of blood is responsible for carrying oxygen to body tissues?

White Blood Cells (WBCs)

Red Blood Cells (RBCs)

Hemoglobin (Hgb) (correct)

Platelets

In what condition would a person most likely have an increased Red Blood Cell (RBC) count?

Polycythemia Vera Signup and view all the answers

What is the primary purpose of a Quality Assurance (QA) program in a laboratory?

To ensure all laboratory information generated is correct Signup and view all the answers

What is the main difference between accuracy and precision in laboratory testing?

Accuracy refers to closeness to the estimated value, while precision refers to reproducibility Signup and view all the answers

What are the three major activities involved in Quality Assurance (QA) in a laboratory according to the text?

Preventive, Assessment, Corrective Signup and view all the answers

What type of blood sample is collected during a skin puncture according to the text?

Peripheral blood Signup and view all the answers

Erythrocyte Sedimentation Rate (ESR) measures the rate at which red blood cells sediment in a period of one ______

hour Signup and view all the answers

Quality Assurance (QA) in a laboratory includes all aspects of laboratory activities that affect the results produced from the choice of method, to the handling of specimen and reporting ______

results Signup and view all the answers

QA in a Hematology Laboratory is intended to ensure the reliability of the laboratory ______

test Signup and view all the answers

Blood sample collected through skin puncture is called peripheral blood instead of capillary blood and is a mixture of capillary, venous, and arterial blood with interstitial (tissue) fluid and intracellular ______

fluid Signup and view all the answers

A CBC is a basic screening test and one of the most frequently ordered laboratory procedure. It includes Hgb, Hct, RBC, and ______ count.

WBC Signup and view all the answers

A White Blood Cell () count is a test that measures the number of in your body and is often included in a CBC. It helps detect hidden infections and monitor the effectiveness of chemotherapy or radiation treatment in cancer patients.

WBC Signup and view all the answers

RBC count is a blood test used to find out how many RBCs you have, also known as Erythrocyte count. RBCs contain Hgb which carries oxygen to your body tissues. An increase in RBC count is known as Polycythemia Vera and a decrease is known as ______.

Anemia Signup and view all the answers

Hgb determination is the measurement of the concentration of Hgb in the blood. Hgb is a protein in RBC that carries oxygen to your body. It is also used to rule out ______.

Anemia Signup and view all the answers

Study Notes

White Blood Cell Count in CBC

Main purpose of a WBC count is to assess the immune system and detect infections.
Helps monitor chemotherapy or radiation effectiveness in cancer patients.

Reticulocyte Count

Performed to evaluate bone marrow function and new red blood cell production.

Oxygen Transport in Blood

Hemoglobin (Hgb) is the component responsible for carrying oxygen to body tissues.

Increased Red Blood Cell Count

Polycythemia Vera is a condition marked by an increased RBC count.

Quality Assurance (QA) in Laboratories

Primary purpose is to ensure the reliability and accuracy of laboratory results.

Accuracy vs. Precision

Accuracy refers to how close a measured value is to the true value, while precision is about the consistency of repeated measurements.

Major Activities in QA

Key activities include method selection, specimen handling, and result reporting.

Skin Puncture Blood Sample

Blood sample collected during skin puncture is referred to as peripheral blood, not capillary blood.

Erythrocyte Sedimentation Rate (ESR)

ESR measures the rate at which red blood cells sediment over one hour.

Quality Assurance in Hematology

Aims to ensure reliability of laboratory results throughout all testing phases.

Composition of Blood Sample from Skin Puncture

It is a mixture of capillary, venous, and arterial blood along with interstitial fluid and intracellular components.

Complete Blood Count (CBC)

CBC is a basic screening test that includes various parameters such as Hgb, Hct, and RBC count.

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Description

Test your knowledge on basic hematological methods of examination including CBC, white blood cell count, and collection of blood specimen. Explore topics such as Hgb, Hct, RBC, WBC count, and differential count.