Do your computer systems check current CMV (antibody) test results vs. prior (for platelet apheresis donors especially)? If not, do you check manually as far as keep a file on each donor? Have you ever had discrepant test results, such as back and forth NEG,NEG,POS, NEG,NEG,NEG,POS, etc.?? If you had a POS result and then the donor tested NEG for multiple donations after that, would you label the products CMV NEG or not (as precaution due to prior POS result)??