Extraction of Medical Devices for Bacterial Endotoxin Testing USP 161 states: “The standard extraction method is to soak or immerse the device or flush the fluid pathway with extracting fluid that has been heated to 37 ± 1 0°, keeping the extracting fluid in contact with the relevant surface (s) for NLT 1 h at controlled room temperature
〈161〉 Medical Devices—Bacterial Endotoxin and Pyrogen Tests - USP The methods and requirements in this chapter apply to assemblies or devices labeled sterile and nonpyrogenic that are in contact directly or indirectly with the cardiovascular system, lymphatic system, or cerebrospinal fluid
USP-NF 〈161〉 Medical Devices—Bacterial Endotoxin and Pyrogen Tests Either the entire device if claimed to be nonpyrogenic or all fluid pathways, must come in contact with the extraction fluid for the entire The standard extraction method is to soak or immerse the device or flush ± 1 0°, keeping the extracting fluid in contact with the relevant surface(s) rinsing methods may be used, but must be demonstrated
lt;161 gt; TRANSFUSION AND INFUSION ASSEMBLIES AND SIMILAR MEDICAL DEVICES For medical devices, the endotoxin limit is not more than 20 0 USP Endotoxin Units per device except that for those medical devices in contact with the cerebrospinal fluid the limit is not more than 2 15 USP Endotoxin Units per device
161TRANSFUSION AND INFUSION ASSEMBLIES AND SIMILAR MEDICAL DEVICES . . . For devices labeled “nonpyrogenic fluid pathway,”flush the fluid pathway with extracting fluid that has been heated to 37±1 0,keeping the extracting fluid in contact with the relevant pathway for not less than 1hour at controlled room temperature Extracts may be combined,where appropriate The endotoxin limit for the rinsing or extracting
Endotoxin and Pyrogen Testing for Medical Devices: Complete BET Guide . . . How to perform bacterial endotoxin testing (BET) for medical devices — LAL gel-clot, chromogenic, and turbidimetric methods, recombinant Factor C (rFC), USP <85> <161>, ISO 11737-3, FDA 2026 pyrogen guidance update, endotoxin limits by device type, method selection, and regulatory submissions
lt;161 gt; TRANSFUSION AND INFUSION ASSEMBLIES AND SIMILAR MEDICAL DEVICES For medical devices, the endotoxin limit is not more than 20 0 USP Endotoxin Units per device except that for those medical devices in contact with the cerebrospinal fluid the limit is not more than 2 15 USP Endotoxin Units per device A device that fails this test can be retested once by an- other Bacterial Endotoxins test
Endotoxin Limits for Medical Devices According to USP Chapter 161 According to USP Chapter 161, “Transfusion and Infusion Assemblies and Similar Medical Devices,” endotoxin limits for medical devices are as follows: For devices that come into direct or indirect contact with the cardiovascular system and lymphatic system, the endotoxin limit is 0 5 EU mL or 20 EU device For devices in contact with cerebrospinal fluid, the limit is 0 06 EU mL or 2 15 EU
Bacterial Endotoxin Test - eurolab. net The extraction process involves rinsing and or flushing the devices with a minimal amount of liquid to properly remove the device Devices with a non-pyrogenic fluid pathway are removed by flushing the corresponding fluid pathway with extraction fluid heated to 37 ± 1 ° C and removing contact for not less than one hour