Posted in Dictionary, Engineering, Health & Medicine, Science A1AD stands for Alpha-1 Antitrypsin Deficiency (aka AAT deficiency) A1AD Share Pinterest Tweet Whatsapp Post navigation A1-RB/DOE Leave a Reply Cancel replyYour email address will not be published. Required fields are marked *Comment * Name * Email * Website Save my name, email, and website in this browser for the next time I comment.