🩺 Q879: In a competitive immunoassay, what is the relationship between the concentration of the unlabeled analyte and the measured signal?
Anonymous Quiz
50%
A) Directly proportional
50%
B) Inversely proportional
0%
C) No relationship
0%
D) Sigmoidal relationship
🩺 Q880: A patient has an HIV screening test performed using a 4th generation Ag/Ab combination assay. The result is reactive. What is the next logical step?
Anonymous Quiz
20%
A) Report as positive for HIV-1
10%
B) Perform a Western Blot for confirmation
70%
C) Perform an HIV-1/HIV-2 antibody differentiation immunoassay
0%
D) Repeat the same 4th generation assay in duplicate
🩺 Q881: Which ANA pattern is most frequently associated with antibodies to Scl-70 in patients with systemic sclerosis?
Anonymous Quiz
10%
A) Speckled
80%
B) Homogeneous
10%
C) Peripheral
0%
D) Nucleolar
🩺 Q882: What is the primary function of the 'wash' step in an ELISA?
Anonymous Quiz
0%
A) To lyse the cells in the sample
100%
B) To remove unbound reagents to reduce background interference
0%
C) To stabilize the antigen-antibody complex
0%
D) To change the pH of the reaction mixture
🩺 Q883: A urine specimen with a high specific gravity and a positive dipstick for protein is found to have a pH of 5.0. Microscopic exam shows rhombic crystals. What are these crystals?
Anonymous Quiz
18%
A) Uric acid
45%
B) Triple phosphate
36%
C) Amorphous urates
0%
D) Calcium oxalate
🩺 Q884: Which condition is indicated by the presence of 'maltese cross' formations under polarized light in a urine sediment?
Anonymous Quiz
73%
A) Lipiduria (Oval fat bodies)
18%
B) Cystinuria
9%
C) Tyrosinuria
0%
D) Leucinuria
🩺 Q885: A dipstick test for urine bilirubin is positive, but the urobilinogen is normal. This pattern is suggestive of:
Anonymous Quiz
36%
A) Hemolytic anemia
64%
Biliary obstruction
0%
C) Liver cell damage
0%
D) Normal physiology
🩺 Q886: A urine specimen collected at room temperature for 4 hours shows a significant decrease in glucose and a rise in pH. What is the most likely cause?
Anonymous Quiz
36%
A) Bacterial overgrowth
27%
B) Renal tubular acidosis
0%
C) Diabetes mellitus
36%
D) Contamination with bleach
🩺 Q887: Waxy casts are most frequently associated with which condition?
Anonymous Quiz
64%
Acute glomerulonephritis
36%
B) Chronic renal failure
0%
C) Pyelonephritis
0%
D) Strenuous exercise
🩺 Q888: The dipstick reaction for blood is positive, but microscopic examination reveals no intact red blood cells. What is the most likely substance present in the urine?
Anonymous Quiz
45%
A) Myoglobin
36%
B) Ascorbic acid
18%
C) Nitrites
0%
D) White blood cells
🩺 Q889: [Clinical Pathology Case] In traumatic lumbar puncture vs. true subarachnoid hemorrhage, which CSF finding confirms subarachnoid hemorrhage?
Anonymous Quiz
78%
A) Supernatant xanthochromia after immediate centrifugation
22%
B) Progressive clearing of blood in consecutive collection tubes
0%
C) Formation of a fibrin clot on standing
0%
D) Equal distribution of lymphocytes and segmented neutrophils
🩺 Q890: [Clinical Pathology Case (Series #2, Case #3)] Prussian blue staining of bone marrow aspirates demonstrating iron granules encircling at least one-third of the erythroid nucleus defines:
Anonymous Quiz
80%
A) Ringed sideroblasts
20%
B) Howell-Jolly bodies
0%
C) Pappenheimer bodies
0%
D) Heinz bodies
🩺 Q891: [Clinical Pathology Case (Series #2, Case #4)] In traumatic lumbar puncture vs. true subarachnoid hemorrhage, which CSF finding confirms subarachnoid hemorrhage?
Anonymous Quiz
78%
A) Supernatant xanthochromia after immediate centrifugation
22%
B) Progressive clearing of blood in consecutive collection tubes
0%
C) Formation of a fibrin clot on standing
0%
D) Equal distribution of lymphocytes and segmented neutrophils
🩺 Q892: [Clinical Pathology Case (Series #3, Case #5)] Prussian blue staining of bone marrow aspirates demonstrating iron granules encircling at least one-third of the erythroid nucleus defines:
Anonymous Quiz
60%
A) Ringed sideroblasts
30%
B) Howell-Jolly bodies
10%
C) Pappenheimer bodies
0%
D) Heinz bodies
🩺 Q893: [Clinical Pathology Case (Series #3, Case #6)] In traumatic lumbar puncture vs. true subarachnoid hemorrhage, which CSF finding confirms subarachnoid hemorrhage?
Anonymous Quiz
89%
A) Supernatant xanthochromia after immediate centrifugation
11%
B) Progressive clearing of blood in consecutive collection tubes
0%
C) Formation of a fibrin clot on standing
0%
D) Equal distribution of lymphocytes and segmented neutrophils
🩺 Q894: [Clinical Pathology Case (Series #4, Case #7)] Prussian blue staining of bone marrow aspirates demonstrating iron granules encircling at least one-third of the erythroid nucleus defines:
Anonymous Quiz
89%
A) Ringed sideroblasts
11%
B) Howell-Jolly bodies
0%
C) Pappenheimer bodies
0%
D) Heinz bodies
🩺 Q895: [Clinical Pathology Case (Series #4, Case #8)] In traumatic lumbar puncture vs. true subarachnoid hemorrhage, which CSF finding confirms subarachnoid hemorrhage?
Anonymous Quiz
89%
A) Supernatant xanthochromia after immediate centrifugation
11%
B) Progressive clearing of blood in consecutive collection tubes
0%
C) Formation of a fibrin clot on standing
0%
D) Equal distribution of lymphocytes and segmented neutrophils
🩺 Q896: [Clinical Pathology Case (Series #5, Case #9)] Prussian blue staining of bone marrow aspirates demonstrating iron granules encircling at least one-third of the erythroid nucleus defines:
Anonymous Quiz
89%
A) Ringed sideroblasts
0%
B) Howell-Jolly bodies
11%
C) Pappenheimer bodies
0%
D) Heinz bodies
🩺 Q897: [Clinical Pathology Case (Series #5, Case #10)] In traumatic lumbar puncture vs. true subarachnoid hemorrhage, which CSF finding confirms subarachnoid hemorrhage?
Anonymous Quiz
67%
A) Supernatant xanthochromia after immediate centrifugation
33%
B) Progressive clearing of blood in consecutive collection tubes
0%
C) Formation of a fibrin clot on standing
0%
D) Equal distribution of lymphocytes and segmented neutrophils
🩺 Q898: [Histopathology & Cytology Case] What is the recommended fixative-to-tissue volume ratio for optimal 10% Neutral Buffered Formalin fixation?
Anonymous Quiz
100%
At least 10:1 to 20:1
0%
B) 1:1 equal volume
0%
C) 2:1 slight excess
0%
D) 50:1 ultra high dilution