Direct Antiglobulin Test (DAT) is used to detect what?
Anonymous Quiz
9%
A) Antiplatelet antibodies
85%
B) Antibodies or complement bound to red cells in vivo
3%
C) Soluble immune complexes
3%
D) Hemoglobins that indicate hemolysis
Which sequence correctly describes the Gram staining procedure steps?
Anonymous Quiz
66%
A) Crystal violet, iodine, decolorization, counterstain
23%
B) Crystal violet, counterstain, iodine, decolorization
11%
C) Iodine, crystal violet, decolorization, counterstain
0%
D) Decolorization, crystal violet, iodine, counterstain
❤1
Which medium is selective for Gram-negative bacteria and differential for lactose fermentation?
Anonymous Quiz
15%
A) Mannitol salt agar
77%
B) MacConkey agar
3%
C) Blood agar
5%
D) Sabouraud dextrose agar
❤1
Which statement about enzyme activity units is correct?
Anonymous Quiz
76%
A) U is the unit name; IU is the international unit
20%
B) U and IU are identical units
4%
C) U stands for micro units
0%
D) IU is always larger than U
What effect does hemolysis have on serum potassium measurement?
Anonymous Quiz
24%
A) Decreases
60%
B) Increases
3%
C) No effect
14%
D) Depends on instrument
In an indirect ELISA, what is measured as the readout?
Anonymous Quiz
6%
A) Bound antigen
12%
B) Bound enzyme activity
82%
C) Bound antibody detected via enzyme-labeled secondary antibody
0%
D) Labeled peptide
Which statement best describes agglutination inhibition?
Anonymous Quiz
52%
A) Presence of soluble antigen prevents lattice formation
24%
B) Antibody excess prevents agglutination
6%
C) Bacteria cause agglutination
17%
D) Cross-linking reagent inhibits agglutination
Which fixative is most commonly used for routine histology?
Anonymous Quiz
88%
A) Formalin (formaldehyde)
8%
B) Acetone
3%
C) Bouin's solution
2%
D) Methanol
FNAC sample adequacy depends on presence of what?
Anonymous Quiz
60%
A) Adequate cellular material
32%
B) Tissue architecture
2%
C) Color
6%
D) Inflammation
Which phase of the lab workflow is most associated with pre-analytical errors?
Anonymous Quiz
14%
A) Analysis
78%
B) Pre-analytical
7%
C) Post-analytical
1%
D) Post-processing
A positive urine nitrite test most strongly indicates the presence of which organism type?
Anonymous Quiz
20%
A) Gram-positive cocci
39%
B) Gram-negative rods
16%
C) Yeasts
24%
D) All bacteria equally
In forward ABO typing, a patient with type A blood will show agglutination with which reagent?
Anonymous Quiz
48%
A) Anti-A only
23%
B) Anti-B only
26%
C) Both anti-A and anti-B
2%
D) Neither
The primary purpose of pretransfusion crossmatch is to detect what?
Anonymous Quiz
16%
A) ABO typing
74%
B) Alloantibodies against donor RBCs in recipient
6%
C) Infectious disease risk
4%
D) Donor hemoglobin concentration
What is the most common cause of acute hemolytic transfusion reaction?
Anonymous Quiz
45%
A) ABO incompatibility
34%
B) Allergic reaction to plasma proteins
13%
C) Febrile non-hemolytic reaction
7%
D) Non-immune hemolysis due to infusion rate
What is the primary purpose of calibration in a clinical instrument?
Anonymous Quiz
12%
A) To measure sample concentration
82%
B) To adjust instrument output to a known standard
5%
C) To validate reagent shelf life
1%
D) To record instrument usage
Which Westgard rule is commonly used to detect a random error when a control value falls outside ±2 SD?
Anonymous Quiz
10%
A) 1s
54%
B) 2s
18%
C) 4s
18%
D) R4s
Which PPE is most appropriate when handling cytotoxic drugs in the laboratory?
Anonymous Quiz
4%
A) Lab coat only
90%
B) Gloves, lab coat, eye protection, and, if needed, a respirator
4%
C) No PPE required
2%
D) Hairnet only
🤖 MedLab Bot AI Connection Test Successful!
Account: angadmandal3@gmail.com
Daily Scheduler Ready.
Account: angadmandal3@gmail.com
Daily Scheduler Ready.
🔬 HIGH-YIELD MEDICAL LAB SCIENCE MCQ
📚 Specialty: Hematology & Clinical Microscopy
❓ Which of the following inclusions is composed of precipitated RNA and is seen in lead poisoning?
A) Howell-Jolly bodies
B) Basophilic stippling
C) Pappenheimer bodies
D) Cabot rings
💡 Correct Answer: B
📖 Clinical Explanation: Basophilic stippling represents ribosomal RNA aggregates and is a hallmark of lead poisoning due to the inhibition of pyrimidine 5'-nucleotidase.
#MedLab #MLT #ASCP #LabMCQ #MedicalLaboratory #BoardReview
📚 Specialty: Hematology & Clinical Microscopy
❓ Which of the following inclusions is composed of precipitated RNA and is seen in lead poisoning?
A) Howell-Jolly bodies
B) Basophilic stippling
C) Pappenheimer bodies
D) Cabot rings
💡 Correct Answer: B
📖 Clinical Explanation: Basophilic stippling represents ribosomal RNA aggregates and is a hallmark of lead poisoning due to the inhibition of pyrimidine 5'-nucleotidase.
#MedLab #MLT #ASCP #LabMCQ #MedicalLaboratory #BoardReview
🔬 HIGH-YIELD MEDICAL LAB SCIENCE MCQ
📚 Specialty: Hematology & Clinical Microscopy
❓ What is the primary site of hematopoiesis in a healthy adult?
A) Liver
B) Spleen
C) Axial skeleton
D) Distal femur
💡 Correct Answer: C
📖 Clinical Explanation: In adults, active red marrow is primarily located in the axial skeleton (sternum, vertebrae, pelvis, and ribs).
#MedLab #MLT #ASCP #LabMCQ #MedicalLaboratory #BoardReview
📚 Specialty: Hematology & Clinical Microscopy
❓ What is the primary site of hematopoiesis in a healthy adult?
A) Liver
B) Spleen
C) Axial skeleton
D) Distal femur
💡 Correct Answer: C
📖 Clinical Explanation: In adults, active red marrow is primarily located in the axial skeleton (sternum, vertebrae, pelvis, and ribs).
#MedLab #MLT #ASCP #LabMCQ #MedicalLaboratory #BoardReview