Has anyone tried the zinc (sulfate) taste test to check for deficiency?

[Davius]

The idea is to assess your need for zinc by tasting it.

No/subtle taste = you need zinc, unpleasant taste = sufficient zinc level

The reason I am interested in this, is because the blood tests I've done don't seem to be reliable. This would be a quick alternative that works from what I've read online.

What's interesting to me is that no one knows about this. I've been in different pharmacies and everyone was really surprised and wanted to know more. I will order it online.