When measuring plasma protein concentrations using a handheld refractometer, an erroneously high protein measurement will result from which of the following?
A)Holding the refractometer up to a bright light source
B)Using a lipemic or hemolyzed plasma sample
C)Applying too much distilled water when cleaning the refractometer
D)Failure to store the refractometer properly between uses

Question

Quizplus · Accepted Answer

Using a lipemic or hemolyzed plasma sample will cause an erroneously-high protein measurement. Both of these conditions cause the refractive index to be increased. Refractometer results are usually very accurate, providing that the plasma sample is clear.

When Measuring Plasma Protein Concentrations Using a Handheld Refractometer, an Erroneously