Other causes of failed PEth test for alcohol abuse?
My daughter undergoes periodic peth testing for alchohol abuse. She fails regularly, although swears she drinks NOTHING. We have reason to believe she is telling the truth. Assuming she is indeed not drinking, is there a physical condition or ailment that might produce positive peth tests? She is 29, has enlarged lymph nodes, some kind of mysterious condition that gives her severe hives, etc. We are wondering if some type of autoinflammation or autoimmune condition might explain elevated levels. Our daughter is FINALLY discussing this with her regular doctor but if it is some unusual condition a specialist will be needed. The reason the peth test is required is due to a nasty custody dispute with lots of allegations of misconduct. I just want to know if there is ANYTHING other than alchohol consumption that can lead to positive test results. Any thoughts or knowledge of cases? Thanks for reading.
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Hello @kkb44, Welcome to Mayo Clinic Connect. I think you are correct about the ethanol based hand sanitizers affecting the PEth test results. @toolsd and other members in the discussion I'm sure will be able to offer suggestions. Here is some information I found from January 2020 and one from 2019 that talk about the test.
Specificity of Phosphatidylethanol as a Marker for Alcoholic Beverage Consumption: https://www.centerforprofessionalrecovery.com/specificity-of-phosphatidylethanol-as-a-marker-for-alcoholic-beverage-consumption/
“Doctor, I do not understand the results of the test, because I swear I am not drinking alcohol.” Truth or lie?: https://www.sciencedirect.com/science/article/pii/S235200781930099X
Excerpt from the above article - "Conclusion - An abnormal elevation of PEth concentration in blood was observed after using ethanolic solution for hand cleaning. Thus, ethyl alcohol disinfection have to be avoid before blood sampling for DBS. If not, a rapid formation of PEth could happen during blood sampling, involving a risk of erroneous interpretation concerning alcohol consumption."
I sent you a private message, give me a call.
Ethyl alcohol sanitizer absolutely causes false positive peth. My number was 28ng. Very low. Breathing it also causes peth. Stay away from it moving forward. That's what happened to me. They said that hand sanitizer was safe. It obviously isn't. I've been out of work since April cuz of this crap.
That's what we were afraid of! My husband wasn't just rubbing the gel on his hands, he has a mister thing that you wave your hand in front of and it sprays out a mist of the stuff. And his whole office used it, so not only was it misting in his face 20+ times a day from his own use, but I'm sure he walked through it sometimes when his staff used it.
I’m sorry you have been dragged into this mess that is the PEth DBS test. Get with @toolsd as he is creating a list and we are all working together and actually doing something to fight this. My advice is to get as many subsequent tests: nail, blood (intravenous) and hair that will fall in that timeline that supports the abstinence. That’s what I did and had all come back negative. Working with lawyers and toxicologists currently and dealing with the FAA to get my medical back due to this false test.
My husband is waiting to have a liver transplant. He has had nothing to drink since 2019. Has had several peth tests that were negative. Had recent transfusions with blood and plasma and used the swish and swallow mouthwash and now they are saying his peth test is positive (barely but positive). This can prevent him from getting a liver. Please send any peer reviewed articles but the doctor says there has not been a false positive peth.
There’s a French study (from 2018 or 2019) showing that even hand sanitizers can cause false-positive PEth. I’ll look for it, but it was posted early this year on this Board.
Was it the DBS (dried blood spot method) or intravenous?
@melanie6598 Welcome to Mayo Clinic Connect.
Your husband has false positive tests and you are worried he may not be able to get the liver transplant her needs.
May I ask when you find out their decision and who makes the decision?
https://www.sciencedirect.com/science/article/abs/pii/S235200781930099X?via%3Dihub