The presence of ingredients derived from GMO in
food products in the market place is subjected to national
regulations. The decree 4.680 of April 24th,
2003 stipulates that the product should be labeled as
containing GMO ingredients, unless the GMO content
is due to adventitious and unintended contamination
with GMO-derived material and does not exceed 1%
along. With the introduction of this mandatory regulation,
there has been increasing demand on testing laboratories
to develop or adopt qualitative and quantitative
methods to assure compliance.