Medical Laboratory Technician Exam FREE Medical Laboratory Technician Clinical Chemistry Procedures Questions and Answers 3

Question 1

What is the clinical significance of measuring troponin I in the clinical chemistry laboratory?

Accepted Answer

Detection of myocardial injury

Answer

Troponin I is a highly specific and sensitive cardiac biomarker released into the bloodstream when myocardial cells are damaged.

Question 2

In spectrophotometry, what does Beer-Lambert law describe?

Accepted Answer

The linear relationship between absorbance and concentration of a solution

Answer

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.

Question 3

Which lipoprotein fraction is considered most atherogenic and is a primary target for clinical measurement?

Accepted Answer

Low-density lipoprotein (LDL)

Answer

LDL cholesterol is the most atherogenic lipoprotein and its measurement is central to cardiovascular risk assessment and treatment decisions.

Question 4

What is the purpose of running quality control samples at two different concentration levels in clinical chemistry?

Accepted Answer

To verify accuracy across the reportable range of the assay

Answer

Running QC at two levels (normal and abnormal) ensures the assay performs accurately across the clinically relevant measurement range.

Question 5

Which method is considered the reference method for measuring total cholesterol?

Accepted Answer

Abell-Kendall method

Answer

The Abell-Kendall method, based on the Liebermann-Burchard reaction after saponification and extraction, is the CDC-designated reference method for total cholesterol.

Medical Laboratory Technician Exam Practice Test

Medical Laboratory Technician Exam Practice Test

Medical Laboratory Technician Exam FREE Medical Laboratory Technician Clinical Chemistry Procedures Questions and Answers 3