#1
Which of the following is a commonly used test to diagnose diabetes?
Glycated hemoglobin (HbA1c)
ExplanationMeasures average blood sugar levels over the past 2-3 months.
#2
What does PCR stand for in the context of laboratory procedures?
Polymerase Chain Reaction
ExplanationAmplifies and detects DNA sequences.
#3
What is the purpose of a centrifuge in laboratory procedures?
To separate substances based on density
ExplanationSeparates components of a mixture by spinning at high speeds.
#4
Which of the following is NOT a type of white blood cell?
Erythrocyte
ExplanationErythrocytes are red blood cells, not white blood cells.
#5
In microbiology, what is agar used for?
To culture microorganisms
ExplanationProvides a solid medium for microbial growth.
#6
Which of the following is a common method for blood glucose measurement?
Glucose oxidase test
ExplanationUtilizes enzyme reactions to measure glucose levels.
#7
What is the primary function of a hemocytometer?
To count blood cells
ExplanationManual counting of blood cells under a microscope.
#8
Which of the following laboratory tests measures kidney function?
Creatinine clearance test
ExplanationEstimates the glomerular filtration rate.
#9
In immunology, what does ELISA stand for?
Enzyme-Linked Immunosorbent Assay
ExplanationDetects and measures antibodies.
#10
What is the primary purpose of a control sample in laboratory testing?
To ensure accuracy and reliability of the test
ExplanationProvides a baseline for comparison and verifies the test's precision.
#11
Which of the following laboratory tests is commonly used to diagnose infectious diseases such as HIV?
Western blot
ExplanationConfirms presence of specific antibodies or proteins.
#12
What is the main purpose of a blood smear examination?
To evaluate the morphology of blood cells
ExplanationExamines shape, size, and distribution of blood cells.
#13
Which of the following laboratory tests is used to detect antibodies in the blood?
Western blot
ExplanationConfirms presence of specific antibodies or proteins.
#14
Which of the following is NOT a component of a CBC (Complete Blood Count) test?
C-reactive protein
ExplanationC-reactive protein is a marker of inflammation, not part of a CBC.
#15
Which of the following is NOT a step in Gram staining?
Fixing
ExplanationCommon steps include staining with crystal violet, iodine, decolorizing with alcohol, and counterstaining with safranin.
#16
What does CLIA stand for in the context of laboratory regulation?
Clinical Laboratory Improvement Amendments
ExplanationEstablishes quality standards for all laboratory testing.
#17
What is the primary function of a spectrophotometer in a laboratory?
To measure light intensity
ExplanationQuantifies the amount of light absorbed by a substance.
#18
What is the purpose of a sphygmomanometer in a laboratory?
To measure blood pressure
ExplanationDetermines the pressure exerted by blood on artery walls.
#19
What is the primary function of a flow cytometer in a laboratory?
To count and analyze cells
ExplanationMeasures properties of cells as they flow in a fluid stream.