Lena Ekström

Lena Ekström is an Adjunct Professor at the Department of Laboratory Medicine, Karolinska Institutet, and Hospital Chemist at Karolinska University Hospital. Her research focuses on doping analysis and endocrinology, particularly testosterone detection and genetic polymorphisms affecting steroid metabolism.

• Karolinska University Hospital: Clinical Pharmacology Unit
• Karolinska Institutet: Department of Laboratory Medicine

Research interests include:

• Anti-doping methodology development
• Testosterone and anabolic steroid metabolism
• Genetic polymorphism effects on drug disposition
• Athlete Biological Passport biomarkers
• Hormonal contraception impact on steroid profiles
• Pregnancy-related pharmacokinetics

Her 15 most recent publications (2019-2025) demonstrate expertise in doping biomarkers, genetic variations affecting steroid elimination, and physiological responses to performance-enhancing substances. Key journals include Drug Testing and Analysis, Epilepsy Research, and Frontiers series.

Notable collaborations include:

• Andersson A
• Borjesson A
• Lehtihet M
• Hirschberg AL
• Rane A
• Schulze J