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    Endotoxin Testing (LAL)

    Detection of bacterial endotoxin on devices, typically using Limulus Amebocyte Lysate (LAL) assays.

    Reviewed by Christian Espinosa, Founder, Blue Goat CyberLast reviewed May 5, 2026

    Definition

    Endotoxin contamination from gram-negative bacteria can cause severe pyrogenic reactions even after sterilization. LAL methods (gel-clot, turbidimetric, chromogenic) are standardized in USP <85> and ISO 10993-1 references.

    What this means in practice

    Required for blood-contacting and implantable devices; endotoxin failures often trace back to water systems or component handling, not the sterilization step itself.

    Primary references

    3 sources
    Link health: 3 verified· last checked 2026-05-09
    USP·1IMDRF/GHTF·1FDA·1
    1. 1
      USP <85>
      Verified
      USPusp.org
    2. 2
      GHTF/IMDRF Process Validation Guidance
      Verified
      IMDRF/GHTFimdrf.org
    3. 3
      FDA - Device Manufacturing
      Verified
      FDAfda.gov

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