Is it true that people who use drugs drink bleach to alter drug tests?

I don't use drugs. The reason I am asking is because I know someone on drugs and she buys a lot of bleach.I have heard people talking about using bleach to clean themselves out before a drug test.Is it true that people who use drugs drink bleach to alter drug tests?
That's bullshit, bleach will just kill you.Is it true that people who use drugs drink bleach to alter drug tests?
I've never heard of people drinking bleach to de-tox. I have heard of people putting powdered bleach under their finger nails and then peeing on them to alter their results. For the record this trick doesn't work.
i have never herd this i can imagine anyone drinkng bleach that is so bad for u it could kill u surly

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