SILu(TM)MAb Infliximab Stable-Isotope Labeled Monoclonal Antibody (MSQC9) is a recombinant stable isotope-labeled monoclonal antibody which incorporates [13C6 15N4]-Arginine and [13C6 15N2]-Lysine. Expressed in CHO cells it is designed to be used as an internal standard for the quantitative mass spectrometry analysis of Infliximab in human serum. Infliximab is a chimeric monoclonal antibody biologic drug that works against tumor necrosis factor alpha (TNf-a) and is used to treat autoimmune diseases.Infliximab has been approved for the treatment of Crohns disease ulcerative colitis psoriasis psoriatic arthritis ankylosing spondylitis and rheumatoid arthritis. SILu(TM)MAb Infliximab Stable-Isotope Labeled Monoclonal Antibody is for RD use only. Not for drug household or other uses.