One of the most important responsibilities of a phlebotomist is to prevent his/her technique and practices from changing the lab result on the blood they've drawn before it's even tested. Do you know the myriad ways you can alter test results while drawing, transporting, and handling the samples you draw? You must. This article lists 31 common preanalytical errors, the test results they will change, and the impact they can have on patients.

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