Re:Ontario wrongly separated families on results of Motheris...
by leereeves on Tuesday March 06, 2018 @03:10PM
(#16531658)
This isn't that kind of hair analysis - determining which person a hair found at the scene is from. This is looking for markers of drug and alcohol use in hair samples from a known person.
Re:Ontario wrongly separated families on results of Motheris...
by Retric on Tuesday March 06, 2018 @04:06PM
(#16532117)
That was my point, but rereading my comment it really did not come across.
Basically, a different thing had been discredited in the past also involving testing hair. Which IMO is why people though testing hair was junk science vs. the lab not doing their job properly.
That said, I also think testing hair for drugs is so inaccurate to basically be worthless.
That's a separate issue because Hair analysis is not inherently worthless. It was just assumed to be vastly more accurate than it actually was.
You can for example tell from a hair sample is not from the same person. IE blond hair vs black hair. You can't do the reverse and tell it is from the same person without DNA testing.