FREE Medical Laboratory Technician Clinical Chemistry Procedures Questions and Answers Flashcards
6 cards from real Medical Laboratory Technician Exam practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 FREE Medical Laboratory Technician Clinical Chemistry Procedures Questions and Answers flashcards as text
What is the clinical significance of measuring troponin I in the clinical chemistry laboratory?
Answer: Detection of myocardial injury
Troponin I is a highly specific and sensitive cardiac biomarker released into the bloodstream when myocardial cells are damaged.
In spectrophotometry, what does Beer-Lambert law describe?
Answer: The linear relationship between absorbance and concentration of a solution
Beer-Lambert law states that absorbance is directly proportional to the concentration of the absorbing substance and the path length of the light through the solution.
Which lipoprotein fraction is considered most atherogenic and is a primary target for clinical measurement?
Answer: Low-density lipoprotein (LDL)
LDL cholesterol is the most atherogenic lipoprotein and its measurement is central to cardiovascular risk assessment and treatment decisions.
What is the purpose of running quality control samples at two different concentration levels in clinical chemistry?
Answer: To verify accuracy across the reportable range of the assay
Running QC at two levels (normal and abnormal) ensures the assay performs accurately across the clinically relevant measurement range.
Which method is considered the reference method for measuring total cholesterol?
Answer: Abell-Kendall method
The Abell-Kendall method, based on the Liebermann-Burchard reaction after saponification and extraction, is the CDC-designated reference method for total cholesterol.
What is the most common cause of a falsely decreased total protein result on a chemistry analyzer?
Answer: Lipemia interfering with the biuret reaction
Lipemia causes light scattering that can interfere with the biuret colorimetric method, leading to inaccurate total protein measurements.