Magnasense AB, a diagnostic company, develops and commercializes tests for monitoring and optimizing the dosage of biological drugs Sweden and internationally. The company focuses on the neurology, oncology, and autoimmune therapeutic areas. It offers moNATor, a first dose-monitoring laboratory test that provides multiple sclerosis for healthcare professionals and patients; and Viraspec, a COVID-19 saliva test kit. The company was formerly known as AegirBio AB (publ) and changed its name to Magnasense AB in July 2024. Magnasense AB was incorporated in 2019 and is headquartered in Lund, Sweden.