We just got back from the radiology. Isaac does have kidney reflux. This means that he'll have to be on antibiotic once-a-day for a year, at which point he'll hopefully have out grown the disorder. The antibiotic will prevent infection because if infection squirts back up into the kidneys, then it can cause kidney damage.
We also learned last night that he had abnormal levels of galactose in his blood. is a sugar found in milk. This could mean that he does not have the ability to break it down. We've had to switch to soy formula and I've had to stop breast-feeding. He's having more blood tests done to confirm this. Galactocemia shouldn't be confused with lactose intolerance. Intolerance simply means that when a person drinks milk they'll get sick and have diahrea. Galactocemia can lead to death and many other symptoms such as cataracts, speech disorders and if left untreated. We're praying that he doesn't have this because I would really like to be able to nurse him while he's on antibiotic.
Right now I'm praising God for modern technology and ways to treat problems such as these!
Here's more information on galactosemia if you're interested.