I'm getting the IgG4 blood test today. If someone has a problem with IgG4, are the levels elevated all the time? In other words, if one tests negative, does that necessarily mean they don't have IgG4 pouchitis? If that same person were tested a month later, perhaps he would be positive.
I once tested positive for the p-ANCA markers, but on subsequent tests, it was always negative.
I once tested positive for the p-ANCA markers, but on subsequent tests, it was always negative.