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Other causes of failed PEth test for alcohol abuse?

Mental Health | Last Active: Nov 6 9:09pm | Replies (446)
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@nr111

would donated blood that comes from a heavy drinker come up on a Peth test administered while recipient is still hospitalized?

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Replies to "would donated blood that comes from a heavy drinker come up on a Peth test administered..."
John, Volunteer Mentor | @johnbishop | Aug 14, 2021

Hello @nr111, Welcome to Connect, an online community where patients and caregivers share their experiences, find support and exchange information with others. I found some information that I think may answer some of your questions.

"A positive PEth result means that the donor has consumed ethanol sometime during the last 2-4 weeks (approximately). Is testing PEth in dried blood spot and ..." --- PEth FAQ’s for Research Only Specimens: PEth FAQ’s for Research Only Specimens

@toolsd has posted in the following discussion and may have some suggestions or answers for your question -- Other causes of failed PEth test for alcohol abuse?: https://connect.mayoclinic.org/discussion/can-failed-peth-test-for-alchohol-abuse-be-caused-by-physical-conditio/

Did you recently have a PETH test in the hospital?

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toolsd | @toolsd | Aug 14, 2021

Would likely show a positive, yes.

But... it’s prone to not studied or understood false positives AND false negatives. Therefore, it’s really junk science, generally only used by people who simply don’t care or those who have something to gain by you providing a positive, such as rehab clinics, PHBs, airlines, etc.

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