Question 1

Select the best course of action to remedy blood films that typically are too thick from newborns.

Accepted Answer

A) Increase the spreader slide angle. 
B) Use a larger drop. 
C) Dilute the blood with saline. 
D) Decrease the spreader slide angle. 
A) Increase the spreader slide angle. 
B) Use a larger drop. 
C) Dilute the blood with saline. 
D) Decrease the spreader slide angle. D

Question 2

What is the most common reason for blood films having red cells that are gray and white cells that are too dark?

Accepted Answer

A) overrinsing 
B) buffering for too short a time 
C) stain or buffer that is too acidic 
D) stain or buffer that is too alkaline 
A) overrinsing 
B) buffering for too short a time 
C) stain or buffer that is too acidic 
D) stain or buffer that is too alkaline D

Question 3

A patient's blood film had marked echinocytes and many broken and vacuolated neutrophils.The same patient's blood film the day before did not show these features.Select the best course of action.

Accepted Answer

A) Report the results. 
B) Make a new film. 
C) Disregard these findings as artifact. 
D) Collect a new sample and make the film within 5 hours. 
A) Report the results. 
B) Make a new film. 
C) Disregard these findings as artifact. 
D) Collect a new sample and make the film within 5 hours. D

Question 4

How can the correct platelet count on a patient be determined when his or her platelets repeatedly clump in an EDTA specimen?

Accepted Answer

A) Re-collect in sodium citrate tube (blue top) and multiply by 0.5. 
B) Re-collect in sodium citrate tube (blue top) and multiply count by 1.1. 
C) Report the estimated number from the blood film. 
D) Re-collect in an EDTA tube. 
A) Re-collect in sodium citrate tube (blue top) and multiply by 0.5. 
B) Re-collect in sodium citrate tube (blue top) and multiply count by 1.1. 
C) Report the estimated number from the blood film. 
D) Re-collect in an EDTA tube.

Question 5

Methods,such as using a fan to dry blood films faster,are especially important when

Accepted Answer

A) the patient is very anemic or high humidity exists. 
B) the patient has polycythemia or high humidity exists. 
C) the sample is more than 6 hours old. 
D) no one is available to blow on the blood film. 
A) the patient is very anemic or high humidity exists. 
B) the patient has polycythemia or high humidity exists. 
C) the sample is more than 6 hours old. 
D) no one is available to blow on the blood film.

Question 6

Clumped platelets will cause which of the following spurious results when cell counts are performed on an automated hematology analyzer?

Accepted Answer

A) platelets low and white count high 
B) platelets high and white count low 
C) platelets low and white count unaffected 
D) platelets low and hemoglobin high 
A) platelets low and white count high 
B) platelets high and white count low 
C) platelets low and white count unaffected 
D) platelets low and hemoglobin high

Question 7

Macroscopic holes in a blood film most likely mean the patient has

Accepted Answer

A) increased blood proteins. 
B) red cell agglutination. 
C) increased lipids. 
D) increased white blood count. 
A) increased blood proteins. 
B) red cell agglutination. 
C) increased lipids. 
D) increased white blood count.

Question 8

All of the following can be determined from a blood film except

Accepted Answer

A) red cell morphology. 
B) white cell estimate. 
C) red cell estimate. 
D) platelet estimate. 
A) red cell morphology. 
B) white cell estimate. 
C) red cell estimate. 
D) platelet estimate.

Question 9

Coverslip smears are used primarily for

Accepted Answer

A) high white blood counts. 
B) bone marrow aspirates. 
C) finger and heel punctures. 
D) polycythemia patients with high red counts. 
A) high white blood counts. 
B) bone marrow aspirates. 
C) finger and heel punctures. 
D) polycythemia patients with high red counts.

Exam 16: Examination of the Peripheral Blood Film and Correlation with the Complete Blood Count

Select the best course of action to remedy blood films that typically are too thick from newborns.

What is the most common reason for blood films having red cells that are gray and white cells that are too dark?

A patient's blood film had marked echinocytes and many broken and vacuolated neutrophils.The same patient's blood film the day before did not show these features.Select the best course of action.

How can the correct platelet count on a patient be determined when his or her platelets repeatedly clump in an EDTA specimen?

Methods,such as using a fan to dry blood films faster,are especially important when

Clumped platelets will cause which of the following spurious results when cell counts are performed on an automated hematology analyzer?

Macroscopic holes in a blood film most likely mean the patient has

All of the following can be determined from a blood film except

Coverslip smears are used primarily for

An Overview of Clinical Laboratory Hematology

Safety in the Hematology Laboratory

Blood Specimen Collection

Care and Use of the Microscope

Quality Assurance in Hematology and Hemostasis Testing

Cellular Structure and Function

Hematopoiesis

Erythrocyte Production and Destruction

Erythrocyte Metabolism and Membrane Structure and Function

Hemoglobin Metabolism

Iron Kinetics and Laboratory Assessment

Leukocyte Development, Kinetics, and Functions

Platelet Production, Structure, and Function

Manual, Semiautomated and Point-of-Care Testing in Hematology

Automated Blood Cell Analysis

Bone Marrow Examination

Body Fluid Analysis in the Hematology Laboratory

Anemias: Red Blood Cell Morphology and Approach to Diagnosis

Disorders of Iron Kinetics and Heme Metabolism

Anemias Caused by Defects of DNA Metabolism

Bone Marrow Failure

Introduction to Increased Destruction of Erythrocytes

Intrinsic Defects Leading to Increased Erythrocyte Destruction

Extrinsic Defects Leading to Increased Erythrocyte Destruction Nonimmune Causes

Extrinsic Defects Leading to Increased Erythrocyte Destruction Immune Causes

Hemoglobinopathies (Structural Defects in Hemoglobin)

Thalassemias

Nonmalignant Leukocyte Disorders

Cytogenetics

Molecular Diagnostics in Hematopathology

Flow Cytometric Analysis in Hematologic Disorders

Myeloproliferative Neoplasms

Myelodysplastic Syndromes

Acute Leukemias

Mature Lymphoid Neoplasms

Normal Hemostasis and Coagulation

Hemorrhagic Disorders and Laboratory Assessment

Thrombotic Disorders and Laboratory Assessment

Thrombocytopenia and Thrombocytosis

Qualitative Disorders of Platelets and Vasculature

Laboratory Evaluation of Hemostasis

Antithrombotic Therapies and their Laboratory Assessment

Hemostasis and Coagulation Instrumentation

Pediatric and Geriatric Hematology and Hemostasis

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