This is not really in my skills area but has anyone noticed that WA stewards have just handled a Cobalt case where they recorded 130ng but ended up deciding there was "no case to answer". 8 May Vinaka Fiji (that's the dog's name, not a greeting) reported in the WA Capers of that date. A major factor in their decision was a visit to the kennel and their observation that nothing found there gave any indication that extreme quantities of cobalt were present. That is, it must have been a natural fluctuation. This sets a precedent in what was always a hairy rule anyway - ie limited testing of the cause and effect of this natural substance. Surely it is high time that cobalt and arsenic are properly reviewed.
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