Lu, Just FYI- I was inspected recently by CAP and got a deficiency on this question because I was not logging when I threw away or gave away any reagents to the local MLT program. I have always tracked in inventory but never logged a final disposition. I called around to several other facilities and it seems no one else (but the inspecting facility) is logging out either. I just took the hit on it, but now log a final disposition of reagents.