Looking for a trusted Nordic partner to deliver fast and reliable bioequivalence trials?
With over 30 years of clinical research experience, LINK Medical has provided the agility and scientific expertise necessary for successful bioequivalence trials. Our wholly owned sites in Turku and Helsinki, Finland—well known as CRST—specialize in conducting these trials.
LINK Medical has earned a strong reputation as a trusted partner in bioequivalence trials, delivering high-quality data to demonstrate therapeutic equivalence, confirm safety and efficacy, and pave the way for regulatory approval. Our work is driven by a team of experts in clinical research, pharmacology, pharmacokinetics, regulatory affairs, safety, quality assurance, and market access.
Meet Our Experts

Petri Vainio
Chief Scientific Officer
Petri Vainio, MD, PhD, is CRST’s Chief Scientific Officer, leading clinical development across our units. He has decades of experience as a pharmacokineticist. Before joining CRST, he was Senior Medical Officer at the Finnish Medicines Agency (FIMEA), reviewing clinical trial applications, and prior to that, he served on the national ethics committee Tukija. Petri has over 30 years of experience in clinical pharmacology in both industry and academia. In the industry, he has played key roles in advancing drug candidates from preclinical stages to late-phase clinical development and market approval. He also holds the title of Adjunct Professor of Pharmacology and Drug Development at the University of Turku.

Mika Scheinin
Scientific Advisor
Mika Scheinin, MD, PhD, is our Scientific Advisor and led clinical development at CRST from its inception in 1995 until Petri’s appointment. He is Professor Emeritus of Pharmacology, with special expertise in neuropharmacology and psychopharmacology, at the University of Turku. He has been a principal investigator in over 100 clinical trials and served as Director of the Bioanalytics Laboratory at the University of Turku. Mika is well known in the Nordics and beyond for his strong scientific rigor and expertise.