Hematology questions for the DHA lab exam.
Hematology in the DHA lab exam covers blood cell formation, complete blood count parameters, red and white cell disorders, peripheral blood film morphology and basic coagulation. Candidates should be able to calculate and interpret red cell indices, recognize key cell morphology and link findings to conditions such as anemias and leukemias.
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807
hematology practice questions
- 15%
- of the exam
- 8
- subtopics
- Oct 2026
- updated
Inside this topic.
The subtopics our hematology questions cover.
- Coagulation
- RBC Morphology
- Blood Bank
- Morphology
- Anemias
- RBC Indices
- RBCs
- RBC Inclusions
Key facts to remember.
High-yield hematology points to revise before the exam.
- 1
MCV (fL) = hematocrit (%) / RBC count (x10^12/L) x 10; a low MCV is classically caused by iron deficiency or thalassemia.
- 2
Iron deficiency anemia shows low serum ferritin, low serum iron, raised total iron-binding capacity (TIBC) and low transferrin saturation.
- 3
Auer rods in blasts are characteristic of acute myeloid leukemia and are typically numerous in acute promyelocytic leukemia.
- 4
EDTA (lavender top) is the anticoagulant of choice for the complete blood count because it preserves cell morphology well.
- 5
Schistocytes (fragmented red cells) on a blood film suggest microangiopathic hemolysis, as seen in DIC, TTP and HUS.
Sample questions with answers.
10 practice questions for the DHA Medical Laboratory Technologist & Technician Licensing Examination - Dubai UAE (Hematology). Pick an answer to see if you're right, with a full explanation.
Question 1
Which coagulation abnormality is expected in vitamin K deficiency?
Question 2
Which coagulation factor is vitamin K dependent?
Question 3
Which condition most commonly leads to secondary thrombocytosis?
Question 4
Toxic granulation in neutrophils suggests?
Question 5
Spherocytes are most commonly associated with?
Question 6
The leukocyte primarily involved in adaptive immunity is:
Question 7
Platelets originate from:
Question 8
A sample for coagulation studies must be collected in:
Question 9
A 30-year-old patient presents with fatigue and pallor. Laboratory results show Hb 8 g/dL, MCV 68 fL, low ferritin, and increased TIBC. What is the most likely diagnosis?
Question 10
The most common cause of macrocytic anemia is:
Other topics in this exam.
Questions, answered
Learn the formulas for MCV, MCH (hemoglobin / RBC x 10) and MCHC (hemoglobin / hematocrit x 100) and practice calculating them from a set of CBC results. Then use the result to classify the anemia as microcytic, normocytic or macrocytic. It also helps to know that a very high MCHC suggests spherocytes or a sample problem such as lipemia or cold agglutinins.
Prioritize classic associations: target cells in thalassemia and liver disease, spherocytes in hereditary spherocytosis and autoimmune hemolysis, sickle cells in sickle cell disease, teardrop cells in myelofibrosis and hypersegmented neutrophils in megaloblastic anemia. Inclusions such as Howell-Jolly bodies (after splenectomy) and basophilic stippling (lead poisoning, thalassemia) are also worth knowing. Revising from images rather than text alone makes recognition easier.
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All 807 hematology questions, with explanations and a readiness score for this topic.