Phlebotomist Exam Prep

Category - Handling & Labs

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Which of the following examples is a pre-analytical variable?

Patient did not maintain the designated fasting period for a fasting sample.
Light sensitive sample not protected from light.
Elevated result not reported immediately
A and B

Explanation

Answer: D - A patient eating during the fasting period necessary for a fasting specimen and not protecting a light-sensitive specimen from light, are two examples of pre-analytical variables. Pre-analytical variables account for most laboratory errors.

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