If you look at a phlebotomy tray right now, there is a high probability of seeing a specific tool: USP Grade EDTA.
For the lab professional, the presence of such a ubiquitous tool raises critical considerations.
This https://barbaraydsy437050.goabroadblog.com/38050227/technical-vs-usp-grade-edta-edetate-calcium-disodium-safety-in-healthcare