Exemplary embodiments of the present invention provide a method for assessing a proportion of one or more cotton species in an article comprising cotton. The method includes providing a sample including cotton fibers from the article comprising cotton. Cotton DNA is extracted from the cotton fibers to provide extracted cotton DNA. The extracted cotton DNA is analyzed to identify a presence of one or more cotton species included in the article comprising cotton. Proportions of the one or more cotton species included in the article comprising cotton are assessed.
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