Validation of a New Biomarker of Fetal Exposure to Alcohol

J Pediatr. 2003 Oct;143(4):463-9. doi: 10.1067/S0022-3476(03)00442-6.

Abstract

Objective: To test the sensitivity and specificity of fatty acid ethyl esters (FAEEs) extracted from meconium to identify alcohol-using pregnant women with a sensitive and specific methodology, gas chromatography-tandem mass spectroscopy (GC/MS/MS). Study design Twenty-seven samples of meconium were obtained from infants from the mixed race community in Cape Town, South Africa, who were enrolled in a longitudinal neurobehavioral study. Maternal alcohol use was reported prospectively during pregnancy. FAEEs were isolated from meconium and quantitated by GC/MS/MS.

Results: Ethyl oleate was the FAEE that correlated most strongly with maternal self-reported drinking, especially with the average ounces of absolute alcohol ingested per drinking day. Ethyl oleate was most strongly related to drinking in the second and third trimesters (Pearson r=.55 and.40, respectively). At a threshold of 1.5 average ounces of absolute alcohol ingested per drinking day, the area under the receiving operator characteristic curve was.92 (95% confidence interval, 0.74-0.97). Using a cut-off value of 32 ng/g, sensitivity was 84.2% and specificity was 83.3%.

Conclusions: Ethyl oleate concentration in meconium assayed by GC/MS/MS provides a highly sensitive and specific indicator of maternal alcohol use during pregnancy.

Publication types

  • Research Support, Non-U.S. Gov't
  • Research Support, U.S. Gov't, P.H.S.
  • Validation Study

MeSH terms

  • Adult
  • Alcohol Drinking*
  • Biomarkers
  • Female
  • Gas Chromatography-Mass Spectrometry
  • Humans
  • Maternal-Fetal Exchange*
  • Meconium / chemistry*
  • Oleic Acids / analysis*
  • Pregnancy
  • ROC Curve
  • Sensitivity and Specificity

Substances

  • Biomarkers
  • Oleic Acids
  • ethyl oleate