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Detection of Endotoxin in Nano-formulations Using Limulus Amoebocyte Lysate LAL Assays
Published on: January 30, 2019
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Utility Of An Automatic Limulus Amebocyte Lysate Kinetic Turbidimetric Test For Endotoxin Screening Of Dialysate
Takayuki Uchida1, Yoshio Kaku2, Hideyuki Hayasaka1
1Department of Clinical Engineering, Saitama Medical Center, Jichi Medical University, Saitama-City, Saitama, Japan.
Medical Devices (Auckland, N.Z.)
|October 22, 2019
Summary
An automatic Limulus amebocyte lysate (LAL) test effectively screens endotoxin activity in hemodialysis dialysate. This method shows strong correlation and agreement with conventional tests, offering a reliable alternative for facilities.
Area of Science:
- Clinical Chemistry
- Biotechnology
- Medical Diagnostics
Background:
- Endotoxin contamination in hemodialysis dialysate poses significant health risks to patients.
- Monitoring endotoxin activity is crucial for patient safety during hemodialysis.
- The Limulus amebocyte lysate (LAL) assay is a standard method for detecting endotoxins.
Purpose of the Study:
- To evaluate the efficacy of an automated LAL kinetic turbidimetric test (Toxinometer ET-mini).
- To assess the suitability of the Toxinometer ET-mini for routine endotoxin screening in dialysate.
Main Methods:
- 110 dialysate samples were analyzed between June 2012 and March 2018.
- Endotoxin activity was measured using the automatic LAL kinetic turbidimetric test.
- Results were compared against a conventional chromogenic substrate LAL test.
Main Results:
- Both automated and conventional LAL tests demonstrated a low detection limit of 0.001 EU/mL.
- The automatic LAL test results strongly correlated (CCC: 0.9933) with the conventional test.
- Excellent agreement was observed between the two methods (mean difference: 0.00±0.01 EU/mL).
Conclusions:
- The automatic LAL kinetic turbidimetric test is a viable tool for endotoxin activity screening.
- This automated method offers a reliable and efficient alternative for hemodialysis facilities.
- The Toxinometer ET-mini can aid in maintaining dialysate safety standards.
