Medical Technologist Test Medical Technologist Terminology 4

Question 1

Which term describes a false-positive or false-negative test result caused by interfering substances in the specimen?

Accepted Answer

Analytical error due to matrix interference

Answer

Matrix interference occurs when components of the specimen (e.g., bilirubin, lipids, hemoglobin) affect the analytical reaction.

Question 2

What does 'thrombocytopenia' indicate?

Accepted Answer

Decreased platelet count below normal

Answer

Thrombocytopenia is a platelet count below the lower reference interval, increasing bleeding risk.

Question 3

The term 'reagent blank' in spectrophotometry is used to:

Accepted Answer

Zero the instrument against reagents without specimen

Answer

A reagent blank contains all reagents but no sample, correcting for absorbance contributed by the reagents themselves.

Question 4

In hematology, 'anisocytosis' describes:

Accepted Answer

Variation in red blood cell size

Answer

Anisocytosis refers to significant variation in the size of red blood cells, reflected by an elevated RDW.

Question 5

What does the term 'proteinuria' mean?

Accepted Answer

Presence of protein in urine above normal amounts

Answer

Proteinuria is the abnormal excretion of protein in urine, often a sign of renal disease.

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