You cannot give blood to anyone which contains the antigens for which the patient has antibodies eg. you can't give A, B or AB blood to an O patient, B to an A patient or A to a B patient.Platelets do not carry these A-B-O antigens.he plasma that platelets are suspended in, however, do contain red cell antibodies, so if they contain anti-A (for example) and massive amounts were transfused to a type A person, there would be a reaction. Source(s): ER PA.