I’ll try to help phan,binh. You can check out the actual CFR reference yourself, 21 CFR 606.171, but in brief, you report any deviation from cGMP, regulations, standards, established specification or unexpected event that may affect the safety, purity or potency of the product, and involves a distributed product, when the deviation has occurred in your facility or under your facility’s control. 1/ This one is dependent on what your procedures say, if you violated your standard operating procedures and you issued product to the patient then it would be reportable. In general, whether the test was ordered or not, once you know the result, it is considered known and should be managed, so I’d have worked it up. The discussion with your reference laboratory has no impact on whether the situation is FDA reportable or not. 2/ Since QC was not performed correctly (incorrect cell suspension used) it could be reportable if the antigen type was done as part of pre-transfusion testing (manufacturing according to the FDA definitions) and the product was issued to the patient.