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Other causes of failed PEth test for alcohol abuse?
Mental Health | Last Active: 4 days ago | Replies (447)Comment receiving replies
Hi, here is a follow up. My institution has allowed me to take 2 more Peth tests. One at my local Doc in a box and one at the actual rehab lab. Using the blood spot board, the lab worker at the rehab did the finger stick and then held my finger over the blood spot board. She said that the finger should never touch the board. The 2 times I have had the test done at the Doc in a box the tech smashed my finger on the 5 spots. One of those Doc in a box tests was positive. I know this seems very technical and picky but if this test is so sensitive that even touching the board can cause False Positives then it should not be used. There are to many unknowns about even how the test should be run. My $.02
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I will tell you from watching my wife fail the finger prick tests I got real interested in exactly how it was collected. The USDTL test procedure sheet is very specific they are to prick finger and let the blood drop on the card. Not squeeze/milkIng and not touch the card.
We started making them do that and tests started passing. We also made them open a fresh kit in front of us. As you say no real proof but interesting you are seeing similar things.
There are some papers that talk about how milking screws up other tests. Not specific to the PeTH. The paper is published out of Rice university in Houston. I sent toolsd the paper. Don’t have it handy tonight.