I don't think covering the fingers is necessary.
Someone here can try covered vs uncovered.
I would wait a couple of days however between tests.
my fingers that wrinkled showed signs for a couple of days.
My right hand was giving me Tinel's sign when I did it. So I have been wearing my brace at night. I plan on retesting that right hand when the buzzing is no longer present. Should be in a few more days. It might give a different result?
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All truths are easy to understand once they are discovered; the point is to discover them.-- Galileo Galilei
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Weezie looking at petunias 8.25.2017
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