🩺 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
🩺 Q194: In a non-competitive (sandwich) ELISA for detecting a viral antigen, what happens to the signal intensity if the 'capture' antibody is inadvertently omitted from the wells?
Anonymous Quiz
13%
A) The signal will be falsely elevated due to non-specific binding.
53%
B) The signal will be zero or near-background, as the antigen cannot be immobilized.
20%
C) The signal will increase because the antigen binds directly to the plastic surface.
13%
D) The enzyme-labeled antibody will bind to the plastic, causing a high false-positive result.
🩺 Q195: When performing a CSF cell count, what is the most appropriate procedure if the sample is too bloody for accurate counting?
Anonymous Quiz
6%
A) Discard the sample
50%
B) Perform a dilution using saline
19%
C) Perform a dilution using glacial acetic acid
25%
D) Use a hemacytometer with a higher magnification
🩺 Q197: A freezing-point depression osmometer is used to measure serum osmolality. If the sample contains a high concentration of ethanol, how will the measured osmolality compare to the calculated osmolality?
Anonymous Quiz
20%
A) The measured osmolality will be significantly lower than the calculated value.
73%
B) The measured osmolality will be significantly higher than the calculated value.
0%
C) The measured osmolality will be identical to the calculated value.
7%
D) The freezing point depression will be unaffected by the presence of ethanol.