PSC: Are IgG and IgG4 the same thing? Do they test different things?
My daughter has PSC and the she asked about the IgG4 blood test, she was told that the IgG test had been done. Is this the same thing…did the Dr mean that the IgG test would show anything…I am confused and do not want to push my daughter to further question this if I do not have correct information. Could someone please clarify this? Are these the same test?