AegirBio AB (publ), a diagnostic company, develops and commercializes tests to follow the dosage of biological drugs. The company focuses on therapeutic drug monitoring of biologic therapies in the multiple sclerosis, cancer, and autoimmune diseases. It offers moNATor, a first dose-monitoring laboratory test to test multiple sclerosis for healthcare professionals and patients; and Viraspec, a COVID-19 saliva test kit. The company was incorporated in 2019 and is based in Lund, Sweden.