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Until someone comes up with a constant fiber,HHT is not a test,is an indicator so it should be called the HHI.
I spent decades in the med field,we did many tests,but we always used known reagents as...

I concur:)

Is no question that popping hair off your arm or leg is a usefull test.Thats not in dispute,is the 5 levals of HHT that I find ridiculas.

HHT is a factoid,nothing more,nothing less,as has been said millions of times on this site,HOW DO'S the blade shave? The final test, the end all be all

At this point in time:) the HHT thing is bullshit JMO