Scraping a microcollection tube across the puncture site is acceptable if the first drop of blood has been wiped away.

Question

Quizplus · Accepted Answer

Scraping a microcollection tube across the puncture site can cause hemolysis and contamination of the blood sample. The first drop of blood should be wiped away to avoid any tissue fluid, which may skew the results, but a scraping motion is not recommended. Instead, a gentle pressure should be applied to the puncture site to allow blood to flow freely into the microcollection tube.

Scraping a Microcollection Tube Across the Puncture Site Is Acceptable