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Ehlers A, Morris C, Krasowski MD. A rapid analysis of plasma/serum ethylene and propylene glycol by headspace gas chromatography. Springerplus. 2013;2(1):203doi: 10.1186/2193-1801-2-203.
Ehlers, A., Morris, C., & Krasowski, M. D. (2013). A rapid analysis of plasma/serum ethylene and propylene glycol by headspace gas chromatography. SpringerPlus, 2(1), 203. https://doi.org/10.1186/2193-1801-2-203
Ehlers, Alexandra, et al. "A rapid analysis of plasma/serum ethylene and propylene glycol by headspace gas chromatography." SpringerPlus vol. 2,1 (2013): 203. doi: https://doi.org/10.1186/2193-1801-2-203
Ehlers A, Morris C, Krasowski MD. A rapid analysis of plasma/serum ethylene and propylene glycol by headspace gas chromatography. Springerplus. 2013 May 01;2(1):203. doi: 10.1186/2193-1801-2-203. Print 2013 Dec. PMID: 23741644; PMCID: PMC3667371.
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Springerplus. 2013 May 01;2(1):203. doi: 10.1186/2193-1801-2-203. Print 2013 Dec.

A rapid analysis of plasma/serum ethylene and propylene glycol by headspace gas chromatography.

SpringerPlus

Alexandra Ehlers, Cory Morris, Matthew D Krasowski

Affiliations

  1. Clinical Chemistry Laboratory, Department of Pathology, University of Iowa Hospitals and Clinics, Iowa City, IA 52242 USA.

PMID: 23741644 PMCID: PMC3667371 DOI: 10.1186/2193-1801-2-203

Abstract

A rapid headspace-gas chromatography (HS-GC) method was developed for the analysis of ethylene glycol and propylene glycol in plasma and serum specimens using 1,3-propanediol as the internal standard. The method employed a single-step derivitization using phenylboronic acid, was linear to 200 mg/dL and had a lower limit of quantitation of 1 mg/dL suitable for clinical analyses. The analytical method described allows for laboratories with HS-GC instrumentation to analyze ethanol, methanol, isopropanol, ethylene glycol, and propylene glycol on a single instrument with rapid switch-over from alcohols to glycols analysis. In addition to the novel HS-GC method, a retrospective analysis of patient specimens containing ethylene glycol and propylene glycol was also described. A total of 36 patients ingested ethylene glycol, including 3 patients who presented with two separate admissions for ethylene glycol toxicity. Laboratory studies on presentation to hospital for these patients showed both osmolal and anion gap in 13 patients, osmolal but not anion gap in 13 patients, anion but not osmolal gap in 8 patients, and 1 patient with neither an osmolal nor anion gap. Acidosis on arterial blood gas was present in 13 cases. Only one fatality was seen; this was a patient with initial serum ethylene glycol concentration of 1282 mg/dL who died on third day of hospitalization. Propylene glycol was common in patients being managed for toxic ingestions, and was often attributed to iatrogenic administration of propylene glycol-containing medications such as activated charcoal and intravenous lorazepam. In six patients, propylene glycol contributed to an abnormally high osmolal gap. The common presence of propylene glycol in hospitalized patients emphasizes the importance of being able to identify both ethylene glycol and propylene glycol by chromatographic methods.

Keywords: Ethylene glycol; Gas chromatography; Glycols; Propylene glycol; Toxicology

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