🩺 Q174: A patient with a megaloblastic anemia has a normal serum folate level. Which laboratory finding would support a diagnosis of Vitamin B12 deficiency?
Anonymous Quiz
27%
A) Elevated methylmalonic acid (MMA) levels.
33%
B) Elevated serum homocysteine levels only.
0%
C) Decreased serum gastrin levels.
40%
D) Increased urine formiminoglutamic acid (FIGLU).
🩺 Q175: Which blood group antigens are destroyed by treatment with proteolytic enzymes like ficin or papain?
Anonymous Quiz
6%
A) Rh antigens
71%
B) Kidd antigens
12%
C) Duffy antigens
12%
D) Kell antigens
🩺 Q177: In the Jaffe reaction for creatinine measurement, which substance is known to cause significant positive interference?
Anonymous Quiz
35%
Ascorbic acid.
18%
Bilirubin.
18%
C) Glucose.
29%
D) Acetoacetate.
🩺 Q177: What is the primary objective of performing a crossmatch before blood transfusion?
Anonymous Quiz
88%
A) To detect incompatibility between donor red cells and patient serum
6%
B) To determine the patient's Rh type
6%
C) To identify all possible antibodies in the patient
0%
D) To verify the expiration date of the blood unit
🩺 Q179: Which red blood cell inclusion is composed of precipitated denatured hemoglobin and is best visualized using a supravital stain like crystal violet?
Anonymous Quiz
14%
A) Basophilic stippling.
64%
B) Pappenheimer bodies.
7%
C) Heinz bodies.
14%
D) Howell-Jolly bodies.
🩺 Q180: A patient has a positive RPR test, but the confirmatory FTA-ABS test is negative. What is the most likely interpretation?
Anonymous Quiz
27%
A) Primary syphilis
20%
B) Tertiary syphilis
53%
C) False-positive RPR
0%
D) Neurosyphilis
🩺 Q180: In fine needle aspiration (FNA) cytology of a thyroid nodule, the presence of 'Orphan Annie eye' nuclei and intranuclear inclusions is diagnostic for which condition?
Anonymous Quiz
7%
A) Follicular adenoma.
47%
B) Medullary carcinoma.
27%
C) Papillary carcinoma.
20%
D) Hashimoto's thyroiditis.
🩺 Q182: Which immunoglobulin class is the first to be produced in a primary immune response and is the most efficient at agglutination?
Anonymous Quiz
12%
A) IgG
18%
B) IgA
65%
C) IgM
6%
D) IgE
🩺 Q182: Which stain is utilized specifically to demonstrate the presence of iron deposits (hemosiderin) in liver biopsy tissue?
Anonymous Quiz
35%
A) Gomori Methenamine Silver (GMS).
53%
B) Prussian Blue.
6%
C) Oil Red O.
6%
D) Mucicarmine.
🩺 Q184: Which HLA class I antigens are critical for consideration in tissue transplantation matching?
Anonymous Quiz
60%
A) HLA-DR, DP, DQ
20%
B) HLA-A, B, C
20%
C) HLA-G, E
0%
D) HLA-DM
🩺 Q184: Which of the following describes the 'mounting' process in histology?
Anonymous Quiz
0%
Attaching the tissue block to the microtome chuck.
88%
B) Placing a coverslip over the tissue section using a synthetic resin.
12%
C) Embedding the tissue in a cassette for processing.
0%
D) Staining the slide with hematoxylin and eosin.
🩺 Q185: A urine sediment examination reveals the presence of 'ghost cells' and amorphous urates. Which of the following conditions is most consistent with the presence of ghost cells?
Anonymous Quiz
27%
A) Hypotonic urine
53%
B) Hypertonic urine
13%
C) Acidic urine
7%
D) Alkaline urine
🩺 Q187: What is the primary purpose of using a 'cell block' preparation in diagnostic cytology?
Anonymous Quiz
0%
A) To provide a permanent record of the specimen.
100%
B) To allow for histological architecture assessment and ancillary testing (IHC).
0%
C) To increase the concentration of cells for easier screening.
0%
D) To neutralize fixatives that interfere with DNA analysis.
🩺 Q187: A urine dipstick is positive for blood, but microscopic examination shows no RBCs. What is the most likely cause?
Anonymous Quiz
63%
A) Hemoglobinuria or myoglobinuria
38%
B) Ascorbic acid interference
0%
C) High specific gravity
0%
D) Bilirubin interference
🩺 Q189: In a clinical chemistry analyzer utilizing Beer's Law, a patient sample is tested for total protein. The absorbance is found to be 1.800, which exceeds the linearity limit of the instrument. What is the most appropriate action for the technologist?
Anonymous Quiz
7%
A) Report the result as 'greater than the upper limit of linearity'.
93%
B) Dilute the specimen with saline, re-run, and multiply the result by the dilution factor.
0%
C) Increase the incubation time for the reaction to reach completion.
0%
D) Extrapolate the result from the standard curve beyond the highest calibrator.
🩺 Q189: Which urinary crystal is described as a 'coffin-lid' appearance and is typically found in alkaline urine?
Anonymous Quiz
13%
A) Calcium oxalate
88%
B) Triple phosphate
0%
C) Uric acid
0%
D) Cystine
🩺 Q190: During serum protein electrophoresis on cellulose acetate, the technologist observes a 'split' albumin band. What is the most likely cause of this phenomenon?
Anonymous Quiz
93%
A) Bisalbuminemia, a genetic condition featuring two distinct albumin variants.
7%
B) Hemolysis of the serum sample during collection.
0%
C) Insufficient voltage applied to the electrophoresis chamber.
0%
D) Use of an incorrect buffer pH, causing protein denaturation.
🩺 Q192: Which type of cast is considered highly indicative of chronic renal failure when present in large numbers?
Anonymous Quiz
31%
A) Hyaline cast
63%
B) Waxy cast
6%
C) RBC cast
0%
D) WBC cast
🩺 Q192: In a flow cytometry immunophenotyping panel, the 'gating' strategy is used to isolate a specific population of cells. Which physical properties are typically used to create the primary gate for white blood cells?
Anonymous Quiz
47%
A) Forward Scatter (FSC) and Side Scatter (SSC).
47%
B) Fluorescence intensity of CD45 and CD14.
7%
Cell surface charge and molecular weight.
0%
D) Absorbance and refractive index.
🩺 Q194: A urine specimen from an infant has a 'mousy' odor. Which test should be performed to confirm the suspected metabolic disorder?
Anonymous Quiz
12%
A) Clinitest
82%
B) Ferric chloride test
6%
C) Ictotest
0%
D) Acetest