blood tests we have to check what's going on even if things go very quickly in the ER that typically is going to take at least 45 minutes to do all those things you need to do so a three hour treatment window means the patient better have arrived within two hours of when the symptoms started or we can't give it right so if you woke up with the symptoms we don't know when it started right if nobody was there to call 9-1-1 we don't know when it was started so this is the biggest problem we have a very tight treatment window there have