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

Assessment of renal function

Answer

Evaluation of liver damage

Answer

Screening for diabetes mellitus

Question 2

In spectrophotometry, what does Beer-Lambert law describe?

Accepted Answer

The linear relationship between absorbance and concentration of a solution

Answer

The scattering of light by particulate matter

Answer

The emission spectrum of heated elements

Answer

The refraction of light through a prism

Question 3

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

Accepted Answer

Low-density lipoprotein (LDL)

Answer

High-density lipoprotein (HDL)

Answer

Very low-density lipoprotein (VLDL)

Answer

Chylomicrons

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

To calibrate the instrument before patient testing

Answer

To determine the reference range for the analyte

Answer

To identify the detection limit of the method

Question 5

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

Accepted Answer

Abell-Kendall method

Answer

Enzymatic colorimetric method

Answer

Friedewald calculation

Answer

Ultracentrifugation

Question 6

What is the most common cause of a falsely decreased total protein result on a chemistry analyzer?

Accepted Answer

Lipemia interfering with the biuret reaction

Answer

Hemolysis of the specimen

Answer

Prolonged tourniquet application

Answer

Dehydration of the patient