It depends on the labs doing the testing. The ranges are given for those types of machines they use.
It is very arbitrary however in the upper ranges. The ranges were not done on people using supplements, so anyone taking a vitamin containing B6 will show higher levels.
The ranges are just statistical analyses done on many people..believed to be "normal"..that is without symptoms.
It is really not that accurate IMO for many nutrients.
Being low in B6 can cause neuropathies. It wouldn't hurt to take a small amount daily IMO in your case.
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Weezie looking at petunias 8.25.2017
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