Just so you have some data to back up the reasons for checking copper and zinc. the last one speaks to an excess zinc causing a copper deficiency.

http://www.ncbi.nlm.nih.gov/pubmed/17236184
http://www.haematologica.org/content/92/10/1429
http://ajcp.oxfordjournals.org/content/132/2/191

http://onlinelibrary.wiley.com/doi/1...60217/abstract

Good luck with everything.