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Serum ethylene glycol by high-performance liquid chromatography
P A Vollmer1, D C Harty, N B Erickson
1Department of Pathology, Indiana University School of Medicine, Indianapolis 46202, USA.
Journal of Chromatography. B, Biomedical Applications
|October 25, 1996
Summary
This study presents a new high-performance liquid chromatography (HPLC) method for accurately measuring ethylene glycol in serum. The validated assay offers high sensitivity and precision for clinical diagnostics.
Area of Science:
- Analytical Chemistry
- Clinical Chemistry
- Biochemistry
Background:
- Ethylene glycol poisoning is a serious medical condition.
- Accurate and sensitive detection of ethylene glycol in serum is crucial for timely treatment.
- Existing methods may have limitations in sensitivity, precision, or linearity.
Purpose of the Study:
- To develop and validate a high-performance liquid chromatography (HPLC) method for the detection and quantitation of ethylene glycol in human serum.
- To establish the analytical performance characteristics of the developed assay.
Main Methods:
- Serum samples were derivatized with benzoyl chloride under alkaline conditions.
- Ethylene glycol and internal standard were purified using solid-phase extraction.
- Analysis was performed using HPLC with UV detection.
Main Results:
- Analytical recovery ranged from 96% to 103%.
- The calibration curve demonstrated linearity from 20 to 2000 mg/L.
- Limits of detection and quantitation were 10 mg/L and 20 mg/L, respectively.
- Assay imprecision was 4.8% or less.
Conclusions:
- The developed HPLC method is highly sensitive, precise, and linear for quantifying ethylene glycol in serum.
- The assay is robust and free from common interferences, making it suitable for clinical use.
- This method provides an improved analytical tool for diagnosing and managing ethylene glycol toxicity.