Dave, we just had a pre-audit for 17025. One of the requirements before out audit was a proficiency test schedule. If we could not have any proficiency testing completed before our audit, we need to give our auditor a schedule of when it would be performed.
Now, after saying that, none of the proficiency test providers could help us because of the test methods listed in our scope. Our sister lab ran into the same thing. So after much discussion, we were told we could develope our own program between our labs. So we exchanged our lab scope's and low and behold...only two test methods are shared by us.
I'm still waiting for a reply from our auditor. Seems this requirement might need to be dropped.