Kristina Zvonar has finished Faculty of Pharmacy and Biochemistry in Zagreb in 1995, course Medical Biochemistry. Since 1996. Till 2000, she has worked at the Department of Biochemistry and Molecular Biology at the faculty of Pahrmacy and BIochemistry where she has finished her master's degree in biochemistry. From 2000. till 2002 she was working at the Department of Laboratory Medicine, University Hospital Dubrava, where she passed the professional exam. From 2002 to 2010 she has worked at the Department of Cardiac Surgery, University Hospital Dubrava, where she led a research laboratory (from founding, equipping and laboratory organization to conducting research related to cardiac surgery). 2009. She get her PhD thesis also in field of Biochemistry.

2007. she has finished course for IRCA Lead Auditor for ISO 9001 by DNV and since then she work as a subcontractor for DNV. In 2010. she did the course for Lead auditor for ISO 13485 and in 2011. for the Medical Device Directive. Today, apart from Croatian territory and the former Yugoslavia, she covers also area of France, Belgium, Hungary and Spain. The portfolio of medical products for which she have approval are follows: plastic products with measuring function (spoons and syringes for giving antibiotics, cups and bags for urine), various creams, different systems for wound care (vaccum assisted therapy, different types of gauze, viscose and celuloze products, sponges and foams), disinfectants, dental materials, different catheters (infusion, transfusion and urine), panels for operating rooms and clean rooms, accessories and kits for performing surgical procedures of non-woven materials, medical gases.

Beside manufacturer of medical devices, her clients are manufacturers of cosmetic products, different clinics, dental offices and dental laboratories, manufacturers of in-vitro diagnostc products, and companies for export-import of medical devices.