🔬 HIGH-YIELD MEDICAL LAB SCIENCE MCQ
📚 Specialty: Hematology & Clinical Microscopy

❓ Which type of anemia is associated with Cabot rings?

A) Iron deficiency
B) Megaloblastic anemia
C) Aplastic anemia
D) Hemolytic anemia

💡 Correct Answer: B
📖 Clinical Explanation: Cabot rings are remnants of the mitotic spindle and are seen in severe anemia, particularly megaloblastic anemia or lead poisoning.

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🔬 HIGH-YIELD MEDICAL LAB SCIENCE MCQ
📚 Specialty: Hematology & Clinical Microscopy

❓ Which urine reagent strip test is most sensitive to albumin?

A) Protein
B) pH
C) Glucose
D) Ketones

💡 Correct Answer: A
📖 Clinical Explanation: The protein pad on a urine dipstick primarily reacts to the presence of albumin using the principle of the protein error of indicators.

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🔬 HIGH-YIELD MEDICAL LAB SCIENCE MCQ
📚 Specialty: Hematology & Clinical Microscopy

❓ What is the normal range for a platelet count in adults?

A) 50,000–100,000/µL
B) 150,000–450,000/µL
C) 500,000–750,000/µL
D) 1.0–4.0 x 10^6/µL

💡 Correct Answer: B
📖 Clinical Explanation: The standard reference range for platelet count in healthy adults is 150,000 to 450,000 per microliter of blood.

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🔬 HIGH-YIELD MEDICAL LAB SCIENCE MCQ
📚 Specialty: Hematology & Clinical Microscopy

❓ Which of these is a hallmark of acute promyelocytic leukemia (APL)?

A) t(8;21)
B) t(15;17)
C) t(9;22)
D) t(12;21)

💡 Correct Answer: B
📖 Clinical Explanation: APL (FAB M3) is associated with the t(15;17) translocation, which creates the PML-RARA fusion protein.

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🔬 HIGH-YIELD MEDICAL LAB SCIENCE MCQ
📚 Specialty: Hematology & Clinical Microscopy

❓ Which parasite is found in the urine and is associated with hematuria?

A) Schistosoma haematobium
B) Trichomonas vaginalis
C) Enterobius vermicularis
D) Giardia lamblia

💡 Correct Answer: A
📖 Clinical Explanation: Schistosoma haematobium eggs are commonly found in the urine of infected patients and are associated with chronic hematuria.

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🔬 HIGH-YIELD MEDICAL LAB SCIENCE MCQ
📚 Specialty: Hematology & Clinical Microscopy

❓ Which of the following describes the appearance of schistocytes?

A) Fragmented RBCs
B) Target-shaped RBCs
C) Spheroidal RBCs
D) Oval RBCs

💡 Correct Answer: A
📖 Clinical Explanation: Schistocytes are fragmented RBCs, often seen in microangiopathic hemolytic anemia.

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🔬 HIGH-YIELD MEDICAL LAB SCIENCE MCQ
📚 Specialty: Hematology & Clinical Microscopy

❓ What is the purpose of the APTT reagent?

A) Activates the intrinsic pathway
B) Activates the extrinsic pathway
C) Activates the common pathway
D) Activates platelets

💡 Correct Answer: A
📖 Clinical Explanation: The APTT reagent contains a contact activator (like kaolin or silica) and phospholipids to trigger the intrinsic coagulation pathway.

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🔬 HIGH-YIELD MEDICAL LAB SCIENCE MCQ
📚 Specialty: Hematology & Clinical Microscopy

❓ Which of these is a characteristic of a lymphocyte?

A) Large granules
B) High N:C ratio
C) Multilobed nucleus
D) Auer rods

💡 Correct Answer: B
📖 Clinical Explanation: Lymphocytes typically have a high nucleus-to-cytoplasm (N:C) ratio, reflecting their condensed chromatin and limited cytoplasm.

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🔬 HIGH-YIELD MEDICAL LAB SCIENCE MCQ
📚 Specialty: Hematology & Clinical Microscopy

❓ What is the most common cause of hyperkalemia in a urine sample?

A) Renal failure
B) Hemolysis of cells in the sample
C) Dietary excess
D) Medication

💡 Correct Answer: B
📖 Clinical Explanation: While urine potassium is usually low, hemolysis of blood cells within the urine sample can falsely elevate the potassium result.

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🔬 HIGH-YIELD MEDICAL LAB SCIENCE MCQ
📚 Specialty: Hematology & Clinical Microscopy

❓ Which of the following is a feature of iron deficiency anemia?

A) Increased ferritin
B) Decreased TIBC
C) Decreased ferritin
D) Increased serum iron

💡 Correct Answer: C
📖 Clinical Explanation: In iron deficiency, stored iron is depleted, leading to decreased serum ferritin.

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🔬 HIGH-YIELD MEDICAL LAB SCIENCE MCQ
📚 Specialty: Hematology & Clinical Microscopy

❓ What is the primary function of the platelet?

A) Oxygen transport
B) Immune response
C) Hemostasis
D) Erythropoiesis

💡 Correct Answer: C
📖 Clinical Explanation: Platelets are essential for primary hemostasis through adhesion, activation, and aggregation.

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🔬 HIGH-YIELD MEDICAL LAB SCIENCE MCQ
📚 Specialty: Hematology & Clinical Microscopy

❓ Which of the following is associated with the presence of target cells?

A) Liver disease
B) Iron deficiency
C) Aplastic anemia
D) Viral infection

💡 Correct Answer: A
📖 Clinical Explanation: Target cells (codocytes) are frequently seen in liver disease due to increased membrane surface area.

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🔬 HIGH-YIELD MEDICAL LAB SCIENCE MCQ
📚 Specialty: Hematology & Clinical Microscopy

❓ What is the significance of a positive nitroblue tetrazolium (NBT) test?

A) Chronic granulomatous disease
B) G6PD deficiency
C) Leukemia
D) Sickle cell disease

💡 Correct Answer: A
📖 Clinical Explanation: The NBT test is used to diagnose Chronic Granulomatous Disease; a negative (or reduced) result indicates defective NADPH oxidase function.

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🔬 HIGH-YIELD MEDICAL LAB SCIENCE MCQ
📚 Specialty: Hematology & Clinical Microscopy

❓ Which coagulation factor is Vitamin K dependent?

A) Factor II
B) Factor V
C) Factor VIII
D) Factor XI

💡 Correct Answer: A
📖 Clinical Explanation: Factors II, VII, IX, and X are Vitamin K dependent.

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🔬 HIGH-YIELD MEDICAL LAB SCIENCE MCQ
📚 Specialty: Hematology & Clinical Microscopy

❓ What is the normal pH of urine?

A) 4.5-8.0
B) 2.0-3.0
C) 9.0-10.0
D) 1.0-2.0

💡 Correct Answer: A
📖 Clinical Explanation: Normal urine pH typically ranges from 4.5 to 8.0, depending on the diet and metabolic state.

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🔬 HIGH-YIELD MEDICAL LAB SCIENCE MCQ
📚 Specialty: Hematology & Clinical Microscopy

❓ Which of the following is a marker for hematopoietic stem cells?

A) CD34
B) CD3
C) CD19
D) CD14

💡 Correct Answer: A
📖 Clinical Explanation: CD34 is the standard surface marker used to identify and quantify hematopoietic stem cells.

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🔬 HIGH-YIELD MEDICAL LAB SCIENCE MCQ
📚 Specialty: Hematology & Clinical Microscopy

❓ Which condition shows the presence of 'smudge cells'?

A) AML
B) CLL
C) CML
D) ALL

💡 Correct Answer: B
📖 Clinical Explanation: Smudge cells are fragile lymphocytes that rupture during the preparation of a peripheral blood smear, common in Chronic Lymphocytic Leukemia (CLL).

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🔬 HIGH-YIELD MEDICAL LAB SCIENCE MCQ
📚 Specialty: Hematology & Clinical Microscopy

❓ Which of the following is a cause of elevated ESR?

A) Sickle cell anemia
B) Polycythemia
C) Inflammation
D) Spherocytosis

💡 Correct Answer: C
📖 Clinical Explanation: Inflammation increases plasma proteins like fibrinogen, which promote RBC stacking and increase the ESR.

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🔬 HIGH-YIELD MEDICAL LAB SCIENCE MCQ
📚 Specialty: Hematology & Clinical Microscopy

❓ What is the primary site of coagulation factor synthesis?

A) Liver
B) Kidney
C) Spleen
D) Bone marrow

💡 Correct Answer: A
📖 Clinical Explanation: The liver is the primary site for the synthesis of most coagulation factors.

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🔬 HIGH-YIELD MEDICAL LAB SCIENCE MCQ
📚 Specialty: Hematology & Clinical Microscopy

❓ Which of the following is a type of white blood cell?

A) Erythrocyte
B) Platelet
C) Monocyte
D) Reticulocyte

💡 Correct Answer: C
📖 Clinical Explanation: Monocytes are a type of leukocyte (white blood cell) involved in the immune response.

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