Exam 9: Preanalytical Complications Causing Medical Errors in Blood Collection

If the patient pumps his or her fist prior to blood collection, this action can lead to a falsely increased plasma phosphate concentrations.

When hemoglobin is released from RBCs and serum becomes tinged as pink or red, this condition is referred to as:

Plasma cholesterol will be incorrectly ________ if the tourniquet pressure is too tight or prolonged.

Diurnal rhythms are the same as circadian rhythms.

A decrease in the plasma volume occurring with an increased concentration of cells and larger molecules such as cholesterol is referred to as:

Which of the following analytes will be falsely increased when a sodium citrate blood collection tube is underfilled?

The required fasting time for the fasting glucose blood collection is 8-12 hours.