Called WN, had them drop the number and re-add (as others have said to do), but it still didn't work. Same deal for second existing reservation. Many here have said that you should get it if you add the number after the fact, but it didn't work for me. Tried every work around and spent time talking to the WN folks on the phone... to no avail. Only starting getting precheck for reservations booked after adding the KTN to my WN profile.
1 You may drink water, as much water as you can would be helpful, until arrival. 2  Routine medications may be taken, unless you have been instructed otherwise. If you are diabetic, you may take your diabetes medication no less than 4 hours prior to the exam.  Arrive 15-30 minutes before your PET scan.
If you will not be able to make your PET/CT scan appointment or if you have any questions about your. exam, please notify our Scheduling Department at least 24 hours before your exam at (512)458-9098. Please see more diet instructions on the back of this page. Pet/ct scan PreParatIon InstructIons. The day before your PET/CT scan there are certain instructions to follow. 1. During the day, avoid overindulging in sugars or carbohydrates as much as reasonably possible. 2. Avoid strenuous activity. This means no heavy lifting (such as weight lifting), aerobic activity or yard work.