 The field of live blood microscopy is unregulated, there is no training requirement for practitioners and no recognised qualification, no recognised medical validity to the results, and proponents have made false claims about both medical blood pathology testing and their own services, which some have refused to amend when instructed by the Advertising Standards Authority.It has its origins in the now-discarded theories of pleomorphism promoted by Günther Enderlein, notably in his 1925 book "Bakterien-Cyklogenie".In January 2014 prominent live blood proponent and teacher Robert O.