Phlebotomy Lesson 1.5 Pre-Analytical Variables

This lesson discusses the phases of laboratory testing (before testing, testing, after testing) and provides an overview of the importance of all pre-analytical processes in collecting a valid sample. This is an essential component for all health professionals to comprehend because these variables directly affect the quality of the lab sample and the validity of the test results. This lesson is presented in an easily understandable manner and is intended for students, phlebotomists, cna's, nurses, physicians and other healthcare professionals.