UAMS HEMATOLOGY LAB FINAL EXAM STUDY GUIDE | TESTBANK | PRACTICE
QUESTIONS & ANSWERS | EXAM PREPARATION | ADVANCED REVIEW |
COMPREHENSIVE PRACTICE EXAM | LATEST UPDATE 2026/2027
Examiner:
University of Arkansas for Medical Sciences (UAMS)
TABLE OF CONTENTS
1. Hematopoiesis and Bone Marrow Physiology
2. Complete Blood Count (CBC) and Hematology Instrumentation
3. Peripheral Blood Smear Evaluation
4. Red Blood Cell Disorders
5. White Blood Cell Disorders
6. Platelet Disorders and Hemostasis
7. Coagulation Testing
8. Quality Control and Laboratory Quality Assurance
9. Specimen Collection and Pre-Analytical Variables
10. Laboratory Safety, Interpretation, and Professional Practice
HEMATOLOGY || COMPLETE BLOOD COUNT || ERYTHROCYTES || LEUKOCYTES ||
PLATELETS || COAGULATION || PERIPHERAL BLOOD SMEAR || RETICULOCYTES ||
QUALITY CONTROL || HEMOSTASIS || BONE MARROW || CELL MORPHOLOGY ||
AUTOMATED ANALYZERS || DIFFERENTIAL COUNT || LABORATORY SAFETY ||
SPECIMEN INTEGRITY || MICROCYTOSIS || MACROCYTOSIS || ANEMIA || LEUKEMIA
|| PROFESSIONAL PRACTICE
QUESTION 1.
A patient presents with fatigue and pallor. CBC results demonstrate a low
hemoglobin concentration, markedly decreased MCV, elevated RDW, and reduced
reticulocyte count. Which additional laboratory finding would most strongly support
iron deficiency anemia rather than thalassemia trait?
,A. Elevated serum ferritin with normal transferrin saturation
B. Reduced serum ferritin with increased total iron-binding capacity
C. Increased hemoglobin A₂ concentration
D. Normal ferritin with increased erythrocyte count
🔴 Correct Answer: B. Reduced serum ferritin with increased total iron-binding
capacity
🔵 Explanation: Iron deficiency anemia is characterized by depleted iron stores,
resulting in low ferritin and compensatory elevation of total iron-binding capacity.
Thalassemia trait typically demonstrates normal or increased iron stores and often an
elevated RBC count despite microcytosis. Increased hemoglobin A₂ is more
characteristic of beta-thalassemia trait.
QUESTION 2.
During routine quality control review, one level of hematology analyzer control
exceeds the acceptable range while patient values remain clinically plausible. What is
the most appropriate immediate action?
A. Report all patient results without review
B. Investigate the control failure before releasing affected patient results
C. Repeat only abnormal patient specimens
D. Replace all patient specimens with new collections immediately
🔴 Correct Answer: B. Investigate the control failure before releasing affected
patient results
🔵 Explanation: Quality control failures require investigation before patient results are
reported because analyzer performance may be compromised. Acceptable-looking
patient results do not override failed quality control. Repeating only abnormal
specimens or recollecting all samples does not address the underlying analytical issue.
QUESTION 3.
,An automated differential flags possible blasts in a patient with pancytopenia. What
is the laboratory professional's best next step?
A. Release the automated differential without review
B. Cancel the CBC entirely
C. Perform a manual peripheral blood smear review and differential according to
laboratory policy
D. Report the specimen as unsuitable
🔴 Correct Answer: C. Perform a manual peripheral blood smear review and
differential according to laboratory policy
🔵 Explanation: Instrument flags suggesting blasts require microscopic confirmation
because automated analyzers cannot reliably classify all abnormal cells. Manual review
verifies morphology and ensures clinically significant findings are accurately reported.
Simply releasing or canceling results would be inappropriate.
QUESTION 4.
Which finding most strongly indicates ineffective erythropoiesis rather than increased
peripheral destruction of erythrocytes?
A. Elevated reticulocyte count
B. Increased unconjugated bilirubin
C. Elevated lactate dehydrogenase with reticulocytosis
D. Low reticulocyte count despite significant anemia
🔴 Correct Answer: D. Low reticulocyte count despite significant anemia
🔵 Explanation: Ineffective erythropoiesis reflects impaired marrow production,
resulting in inadequate reticulocyte response despite anemia. Hemolytic processes
usually stimulate increased reticulocyte production as the marrow compensates.
Therefore, a low reticulocyte count points toward defective production.
QUESTION 5.
, A peripheral smear demonstrates numerous schistocytes. Which clinical condition
most urgently warrants consideration?
A. Iron deficiency anemia
B. Immune thrombocytopenia
C. Microangiopathic hemolytic anemia
D. Hereditary spherocytosis
🔴 Correct Answer: C. Microangiopathic hemolytic anemia
🔵 Explanation: Schistocytes represent fragmented erythrocytes produced by
mechanical destruction within the circulation and are strongly associated with
microangiopathic hemolytic processes such as thrombotic thrombocytopenic purpura
or disseminated intravascular coagulation. Their presence requires prompt clinical
attention.
QUESTION 6.
Which pre-analytical error is most likely to produce falsely decreased platelet counts
because of platelet aggregation?
A. Delayed specimen transport at room temperature
B. EDTA-dependent platelet clumping
C. Mild specimen hemolysis
D. High hematocrit requiring citrate adjustment
🔴 Correct Answer: B. EDTA-dependent platelet clumping
🔵 Explanation: EDTA-induced platelet aggregation causes pseudothrombocytopenia
because platelet clumps are not counted accurately by automated analyzers.
Examination of the smear confirms the phenomenon, and recollection in an alternative
anticoagulant may resolve the issue.
QUESTION 7.
QUESTIONS & ANSWERS | EXAM PREPARATION | ADVANCED REVIEW |
COMPREHENSIVE PRACTICE EXAM | LATEST UPDATE 2026/2027
Examiner:
University of Arkansas for Medical Sciences (UAMS)
TABLE OF CONTENTS
1. Hematopoiesis and Bone Marrow Physiology
2. Complete Blood Count (CBC) and Hematology Instrumentation
3. Peripheral Blood Smear Evaluation
4. Red Blood Cell Disorders
5. White Blood Cell Disorders
6. Platelet Disorders and Hemostasis
7. Coagulation Testing
8. Quality Control and Laboratory Quality Assurance
9. Specimen Collection and Pre-Analytical Variables
10. Laboratory Safety, Interpretation, and Professional Practice
HEMATOLOGY || COMPLETE BLOOD COUNT || ERYTHROCYTES || LEUKOCYTES ||
PLATELETS || COAGULATION || PERIPHERAL BLOOD SMEAR || RETICULOCYTES ||
QUALITY CONTROL || HEMOSTASIS || BONE MARROW || CELL MORPHOLOGY ||
AUTOMATED ANALYZERS || DIFFERENTIAL COUNT || LABORATORY SAFETY ||
SPECIMEN INTEGRITY || MICROCYTOSIS || MACROCYTOSIS || ANEMIA || LEUKEMIA
|| PROFESSIONAL PRACTICE
QUESTION 1.
A patient presents with fatigue and pallor. CBC results demonstrate a low
hemoglobin concentration, markedly decreased MCV, elevated RDW, and reduced
reticulocyte count. Which additional laboratory finding would most strongly support
iron deficiency anemia rather than thalassemia trait?
,A. Elevated serum ferritin with normal transferrin saturation
B. Reduced serum ferritin with increased total iron-binding capacity
C. Increased hemoglobin A₂ concentration
D. Normal ferritin with increased erythrocyte count
🔴 Correct Answer: B. Reduced serum ferritin with increased total iron-binding
capacity
🔵 Explanation: Iron deficiency anemia is characterized by depleted iron stores,
resulting in low ferritin and compensatory elevation of total iron-binding capacity.
Thalassemia trait typically demonstrates normal or increased iron stores and often an
elevated RBC count despite microcytosis. Increased hemoglobin A₂ is more
characteristic of beta-thalassemia trait.
QUESTION 2.
During routine quality control review, one level of hematology analyzer control
exceeds the acceptable range while patient values remain clinically plausible. What is
the most appropriate immediate action?
A. Report all patient results without review
B. Investigate the control failure before releasing affected patient results
C. Repeat only abnormal patient specimens
D. Replace all patient specimens with new collections immediately
🔴 Correct Answer: B. Investigate the control failure before releasing affected
patient results
🔵 Explanation: Quality control failures require investigation before patient results are
reported because analyzer performance may be compromised. Acceptable-looking
patient results do not override failed quality control. Repeating only abnormal
specimens or recollecting all samples does not address the underlying analytical issue.
QUESTION 3.
,An automated differential flags possible blasts in a patient with pancytopenia. What
is the laboratory professional's best next step?
A. Release the automated differential without review
B. Cancel the CBC entirely
C. Perform a manual peripheral blood smear review and differential according to
laboratory policy
D. Report the specimen as unsuitable
🔴 Correct Answer: C. Perform a manual peripheral blood smear review and
differential according to laboratory policy
🔵 Explanation: Instrument flags suggesting blasts require microscopic confirmation
because automated analyzers cannot reliably classify all abnormal cells. Manual review
verifies morphology and ensures clinically significant findings are accurately reported.
Simply releasing or canceling results would be inappropriate.
QUESTION 4.
Which finding most strongly indicates ineffective erythropoiesis rather than increased
peripheral destruction of erythrocytes?
A. Elevated reticulocyte count
B. Increased unconjugated bilirubin
C. Elevated lactate dehydrogenase with reticulocytosis
D. Low reticulocyte count despite significant anemia
🔴 Correct Answer: D. Low reticulocyte count despite significant anemia
🔵 Explanation: Ineffective erythropoiesis reflects impaired marrow production,
resulting in inadequate reticulocyte response despite anemia. Hemolytic processes
usually stimulate increased reticulocyte production as the marrow compensates.
Therefore, a low reticulocyte count points toward defective production.
QUESTION 5.
, A peripheral smear demonstrates numerous schistocytes. Which clinical condition
most urgently warrants consideration?
A. Iron deficiency anemia
B. Immune thrombocytopenia
C. Microangiopathic hemolytic anemia
D. Hereditary spherocytosis
🔴 Correct Answer: C. Microangiopathic hemolytic anemia
🔵 Explanation: Schistocytes represent fragmented erythrocytes produced by
mechanical destruction within the circulation and are strongly associated with
microangiopathic hemolytic processes such as thrombotic thrombocytopenic purpura
or disseminated intravascular coagulation. Their presence requires prompt clinical
attention.
QUESTION 6.
Which pre-analytical error is most likely to produce falsely decreased platelet counts
because of platelet aggregation?
A. Delayed specimen transport at room temperature
B. EDTA-dependent platelet clumping
C. Mild specimen hemolysis
D. High hematocrit requiring citrate adjustment
🔴 Correct Answer: B. EDTA-dependent platelet clumping
🔵 Explanation: EDTA-induced platelet aggregation causes pseudothrombocytopenia
because platelet clumps are not counted accurately by automated analyzers.
Examination of the smear confirms the phenomenon, and recollection in an alternative
anticoagulant may resolve the issue.
QUESTION 7.
