Research laboratories can determine various aspects of mineral status by analysis using scientific equipment such as spectroscopy and chromatography. The literature is replete with studies analysing the mineral status of subjects and discussing the optimal biological parameter for determining mineral status. However, for those without access to such equipment it can be a hit an miss affaire to determine if adequate levels of mineral are present in the diet. However, one test is available that does not require expensive equipment. The zinc taste test uses a solution of zinc sulfate in a simple oral test and allows a reasonable approximation of the current zinc status of the individual, with an accuracy of between 70 and 100 percent1. Taking a teaspoon of zinc sulfate produces a metallic taste in the mouth if adequate zinc status has been attained and correlated with plasma levels of zinc. The absence of such a taste indicates a sub-optimal intake. Zinc sulfate is therefore a reasonably reliable assessment of zinc status.
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