Diagnostiki Athinon is a medical laboratory established in 2007 by Vasileios Sideris, a Doctor-Biopathologist and Biologist, a Certified Functional Medicine Practitioner (CFMP®), and former Scientific Associate of the Hellenic Pasteur Institute. Diagnostiki Athinon offers patients specialized tests of Preventive and Functional Medicine, along with all the traditional laboratory analyses.

Since its inception, the lab has focused on highly specialized, research-oriented tests, with an emphasis on advanced laboratory medicine.