This is a link to an article about changes to regimes for some lab tests (in NZ). It has lots of useful info about various Biochemical tests. (Sadly nothing about the out of date B12 range) The website it's on
www.bpac.org.nz also has lots of other useful stuff.
http://www.bpac.org.nz/BT/2014/Febru...chemistry.aspx