There may be times when leptin is helpful but there are so many issues that can effect leptin, as of July 2020, the ECIR Group is no longer routinely recommending leptin testing. We are in the process of updating DDT+E pages to reflect this. The welcome letter you reference reflects that change. The EMS calculator has also been changed.
I need to leave the rest to Dr Kellon, and as you may have read she is digging out from being without internet as a result of our east coast tropical storm, so thank you for your patience. If you were approved to be part of research she is doing to compare insulin testing at various labs, then you need to speak to her directly.
Nancy C in NH
ECIR Moderator 2003
ECIR Group Inc. President/Treasurer 2019-2020
Join us at the 2021 NO Laminitis! Conference, August 12-15, Harrisburg, PA