Hemochron Signature Elite APTT-C Proficiency Testing

Good morning everyone,

For those of you who utilize the Hemochron Signature Elite APTT-C, who do you subscribe to for proficiency testing? Last I checked CAP didn't offer any surveys, and we are not pleased with the API surveys so far. Since our renewal is coming up within the next few months, I wanted to explore any other potential options. Any help is greatly appreciated. Thank you kindly in advance!