We are revising our protocol on aPTT draw for patients on Heparin drip, both from central lines and peripheral stick.
Wondering wheather other facilities stop/pause the drip and for how long before drawing
Currently the only refference I found was in the latest INS (2016) stating that "research has not established the length of time for stopping fluid flow or the amount of flush solution. One study suggests a wait time of 10 minute after stoping the infusion before drawing the sample". It applies to all infusions, not only Heparin. Our concern is that stoping Heparin for 10 minutes is too long and might show skewed results...
Are you aware of any other references or does every facility create their own protocol and what are they basing it on.