Sweat test scheduled for tomorrow morning

We're taking Madison to Cardinal Glennon Children's Hospital in St. Louis tomorrow at 8am for the "sweat test" to rule out Cystic Fibrosis. I'm nervous and ready to get it over with. The test will take an hour and I'm supposed to dress her warm and bring a blanket. We have to get her to sweat, and I'm sure she's not going to be happy about it. We should have the results soon after the test is over.