Duzen Laboratories Group, founded by Prof. Dr. Yahya Laleli in 1976, has earned a reputation as a national reference diagnostic center that operates in human, food, animal and environmental diagnosis fields, as well as in agriculture and agricultural biotechnology with its four companies: Duzen Laboratory; Duzen-Norwest Environment & Food Laboratories; Duzen-Norwest Veterinary Laboratory; Laleli Olive & Olive Oil Establishment.
Group Companies

Duzen Laboratory – is a pioneer institution in Turkey in clinical laboratory area since its foundation in 1976. Duzen offers a comprehensive suite of diagnostic services through its Clinical Laboratory (biochemistry, hematology, immunology, endocrinology, protein and specialized chemistry, microbiology, molecular biology and medical genetics) and Imaging Divisions (radiology, nuclear medicine, cardiology and EMG sections). Duzen serves over 1,000,000 patients/year and performs around 5 million tests that are mostly esoteric with its specialized doctors and laboratory staff. Clinical research services is also a major focus point in Duzen’s health operations. Duzen is the first EN ISO/IEC 17025 accredited company in its field in Turkey and also holds an EN ISO 15189 accreditation.
For more information please visit our web page at www.duzen.com.tr

Duzen-Norwest Environment & Food Laboratories – provides services in food, environment, food microbiology and environmental microbiology fields. Founded in 1998, our Environment & Food Laboratory has an EN ISO/IEC 17025: 2005 accreditation since 2005. Our laboratories provides with a range of analyses services from food/feed to waste water to our customers from various sectors.
For more information please visit our web page at www.duzennorwest.com.tr

Duzen-Norwest Veterinary Laboratory – provides analysis and consultancy services to livestock, poultry and fish farms and markets, as well as, to pet shops and pet clinics. Our analyses not only include animals themselves but also their environments and feed in collaboration with our Environment & Food Laboratory. As a part of Duzen-Norwest Laboratories our Veterinary Laboratory has an EN ISO/IEC 17025 accreditation since 2005. In our Veterinary Laboratory we do also conduct clinical researches with our industrial partners.
For more information please visit our web page at www.duzennorwestvetlab.com

Taylieli Olive & Olive Oil Establishment – is a family run farm focused on organic farming and production of high value extra virgin olive oil rich in antioxidants. Located around Edremit Bay in the northern part of Aegean See on west cost of Anatolia, the establishment produces over 700 hectolitres of extra virgin olive oil from 55,000 olive trees yearly. The establishment’s flagship product, “The Extra Virgin Selection” has received several gold medals in international competitions in recent years.
For more information please visit our web page at www.lalelioliveoil.com