ALT is typically more liver-specific than AST. Which statement is true?
Anonymous Quiz
24%
A) AST higher in alcoholic liver disease
26%
B) ALT higher in alcoholic liver disease
50%
C) AST/ALT ratio > 2 indicates alcoholic liver disease
0%
D) ALT is not a transaminase
Which morphology and Gram reaction are typical for Staphylococcus aureus?
Anonymous Quiz
20%
A) Gram-positive cocci in chains
12%
B) Gram-negative diplococci
63%
C) Gram-positive cocci in clusters
5%
D) Gram-positive rods
In an indirect ELISA, what is the role of the secondary antibody?
Anonymous Quiz
17%
A) Binding antigen
47%
B) Detecting human antibodies
22%
C) Blocking non-specific sites
14%
D) Enzymatic substrate
Which dye provides blue-purple nuclear staining in standard H&E staining?
Anonymous Quiz
15%
A) Eosin
75%
B) Hematoxylin
7%
C) DAB
3%
D) Wright's stain
What is the primary purpose of a Levey-Jennings chart in clinical labs?
Anonymous Quiz
19%
A) Schedule instrument maintenance
75%
B) Track control results over time
4%
C) Record patient results
2%
D) Calibrate instrument
Which antibody is responsible for RhD antigen incompatibility?
Anonymous Quiz
2%
A) Anti-A
12%
B) Anti-B
82%
C) Anti-D
5%
D) Anti-K
Which statement correctly distinguishes calibration from verification?
Anonymous Quiz
7%
A) Calibration is for routine operation check
12%
B) Verification adjusts instrument to correct bias
79%
C) Calibration establishes instrument accuracy using standards
2%
D) Verification is not required for clinical equipment
What does the flammable symbol on a chemical label indicate?
Anonymous Quiz
13%
A) Health hazard
59%
B) Fire hazard
20%
C) Acute toxicity
8%
D) Corrosive
Frozen section is used intraoperatively to provide rapid diagnosis by performing...
Anonymous Quiz
2%
A) Immunostaining
37%
B) Formalin-fixed paraffin embedding
60%
C) Rapid histologic evaluation on frozen tissue
2%
D) Electron microscopy
❤1
Which test is used as a screening test for systemic autoimmune diseases and can show homogeneous, speckled, nucleolar patterns?
Anonymous Quiz
5%
A) RF
87%
B) ANA by indirect immunofluorescence
5%
C) CRP
3%
D) Complement levels
Which CSF finding is most suggestive of bacterial meningitis?
Anonymous Quiz
3%
A) Normal glucose
83%
B) Elevated protein with low glucose
13%
C) Lymphocytic predominance
2%
D) Normal cell count
In Kirby-Bauer disk diffusion, what does a larger zone of inhibition indicate?
Anonymous Quiz
5%
A) Higher bacterial resistance
20%
B) Lower antibiotic effectiveness
73%
C) Higher susceptibility of bacteria to the antibiotic
2%
D) Higher inoculum
What is the primary purpose of irradiating blood products?
Anonymous Quiz
8%
A) Inactivate pathogens
74%
B) Prevent graft-versus-host disease
3%
C) Extend shelf life
15%
D) Improve oxygen carrying capacity
In thrombocytopenia, which statement about MPV helps differentiate production vs destruction?
Anonymous Quiz
6%
A) Platelet count alone is sufficient
80%
B) MPV is elevated with increased peripheral destruction
11%
C) MPV is elevated only in production defects
3%
D) MPV has no diagnostic value
Which measurements are required to calculate LDL cholesterol using the Friedewald equation?
Anonymous Quiz
3%
A) Total cholesterol only
12%
B) HDL cholesterol only
10%
C) Triglycerides only
75%
D) Total cholesterol, HDL cholesterol, and triglycerides
Which step follows fixation in routine histology?
Anonymous Quiz
67%
A) Dehydration with graded alcohols
30%
B) Embedding in paraffin
3%
C) Sectioning
0%
D) Staining
Which action is essential to maintain aseptic technique during specimen culture?
Anonymous Quiz
42%
A) Open cap away from sterile field
48%
B) Touch agar surface with bare hands
4%
C) Reuse pipette tip
6%
D) Place plates open on bench
Which complement pathway is initiated by antigen-antibody complexes?
Anonymous Quiz
42%
A) Classical pathway
29%
B) Lectin pathway
25%
C) Alternative pathway
4%
D) None
Which CBC parameter represents the average hemoglobin content per red blood cell?
Anonymous Quiz
27%
A) MCV
52%
B) MCH
15%
C) MCHC
6%
D) RDW
Which CBC pattern most often suggests iron deficiency anemia?
Anonymous Quiz
12%
A) Macrocytosis with high MCV
78%
B) Microcytosis with low MCV and low MCHC
9%
C) Normocytic normochromic
1%
D) Hypersegmented neutrophils on smear