http://www.google.ca/search?q=%22ang...al&hs=RD3&sa=2
the following link has results of lab tests for b12
http://www.ashitabagreen.com/compare.html
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http://www.google.ca/search?q=%22ang...al&hs=RD3&sa=2
the following link has results of lab tests for b12
http://www.ashitabagreen.com/compare.html
Hmm. I wonder if there are independent findings. I heard that all [natural] B12 is ultimately derived from bacteria.