My mother in her 50s has gotten a few blood tests done recently, that showed GGT varying from the 60s to 100s. A blood test right before this rise showed normal GGT but high serum creatine (it was high enough that if it was used to estimate glomerular filtration, it would have indicated renal failure). Since creatine was so high, she got another test right after to make sure, and the levels returned to completely normal but her GGT levels were elevated. Ever since then, her GGT readings have been elevated but everything else has been normal.
My mother has not shown any noticeable symptoms of renal or kidney issues but she does have some damage on her esophagus from years ago (and she has had blood tests that were fine with this issue) that the doctor believes could turn into Barrett's esophagus, so she is on a PPI for that. She also has atrial fibrillation from what the doctor believes is a congenital condition but the doctor thinks it isn't serious and only put her on a beta blocker to slow her heart rate a little. Also, I don't think it's relevant, but just in case... her pap smear from this year also tested positive for HPV.
The doctor doesn't seem to be worried about the GGT readings but I feel it would be unusual to have those readings if nothing was wrong. I'm also worried that having a sustained high GGT would be bad for her later on even if nothing else is wrong because I have read a lot of journal articles that say it increases the risk of mortality from any cause.
What I'm hoping to get from asking this question is if anyone has had a similar problem what happened, or if anyone knows what could be causing this since the doctors don't seem to be interested in investigating it. Any ideas would be really appreciated. Thanks guys!