HLB bioStep Co.,Ltd. provides various test services. It offers platform technology services, such as cell-enzyme-based screening, xenograft assay, mitogenic effect test, vaccine antigen, antibody titration, cytokine, MRNA expression, trachea relaxation assay, carrageenan, adjuvant induced paw edema, antipyretic, anti-pain test, isolated blood vessel screening, fibrin plate lysis screening, ferric chloride induced model, food diet induced model, gastric acid secretion, emesis model, MIC test, post antibody effect, enzyme assay, systemic, local infection model, PK study, chemical, transgenic animal, osteoblast-like cell line screening, bone formation marker, and biomarker. The company also provides pharmacokinetic/toxico study, toxicology study, and biological drug; and toxic/clinical pathology services. The company was formerly known as KNOTUS Co.,Ltd. The company is based in Incheon, South Korea.