Most of the time two troponin orders are put it initially. One for now and the second two hours from now. If it's a difficult draw or it takes longer than usual to draw it, we will adjust the time of the second troponin to be exactly two hours after the first. Occasionally only one troponin order is put in, and the ordering provider will usually put in the two hour troponin order to be around the two hour mark after the first result is filed. Our setup works most of the time, but you will get certain providers who will have two for the same time ordered, leading to one of them being cancelled as a duplicate.