At the AMWA Annual Conference in October 2013, I took the BELS exam for the second time. After studying a bit more than I did the first time I took the exam, and having a better idea of what was expected in the exam, I passed!
I am now a certified Editor in the Life Sciences, hence the ELS after my name.
For more information on the Board of Editors in the Life Sciences: http://www.bels.org/index.cfm