Hey guys i wish i could get some help here. i just purchased nbme 13,15,16 and 17 together. i had no idea that there was an expiry date.. i was initially preparing to give step 1 but since my visa was going to expire so i postponed my step 1 and now am looking to give cs first. The real issue i have is that now i have unused nbme 13,15,16 and 17 and they all expire on 26th of july. Is their any way i could give these nbmes later?