Here are the responses to our May, 2012 quick question:
When using point of care testing, at what INR does your anticoagulation clinic require a confirmatory plasma-based (conventional) PT?
a. 4.0: 34 (65%)
b. 5.0: 9 (17%)
c. 6.0: 4 (8%)
d. Never: 5 (10%)
Our responses closely parallel our April 24 and May 7 discussions; it looks like the majority of us prefer caution, knowing the risk of bleeding rises rapidly as the INR exceeds 4.0. Thank you for your participation.