Endotoxin

Endotoxin refers to lipopolysaccharide molecules found in the outer membrane of gram-negative bacteria that trigger potent immune responses when released into bloodstream or tissues, causing fever, inflammation, and potentially life-threatening septic shock at sufficient concentrations. These heat-stable pyrogens remain intact even after bacterial death, contaminating pharmaceutical products, water systems, and manufacturing equipment unless specifically removed through validated processes.

The biopharmaceutical industry implements comprehensive endotoxin control strategies throughout manufacturing. Water systems employ multiple purification stages including reverse osmosis and distillation. Depyrogenation procedures for equipment and containers use dry heat exceeding 250�C destroying endotoxin structures. Testing employs Limulus Amebocyte Lysate (LAL) assays or recombinant factor C assays. Regulatory specifications set maximum endotoxin units per dose based on product administration route and volume. Environmental monitoring programmes detect potential contamination sources enabling preventive actions. As biologic production scales increase, endotoxin control remains paramount for ensuring injectable product safety.