Kostas graduated from the Faculty of Veterinary Medicine (AUTh) in Greece. He completed a PhD and a residency in Feline Gastroenterology, a residency in Clinical Pathology and was a Lecturer and a Senior Lecturer in Veterinary Clinical Pathology at the Bristol Veterinary School for more than 25 years. Kostas has been the Head of Clinical Pathology at Axiom Veterinary Laboratories and Finn Pathologists; has also worked as a senior clinical pathologist and the scientific standards coordinator for IDEXX Laboratories UK. He has published more than 130 scientific papers, research abstracts, professional articles and book chapters and lectures regularly in the UK and Europe. He is the elected Vice-President of the European College of Veterinary Clinical Pathology (ECVCP).