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. 2018 Apr;77:25-32.
doi: 10.1016/j.reprotox.2018.02.002. Epub 2018 Feb 6.

A Utilitarian Comparison of Two Alcohol Use Biomarkers With Self-Reported Drinking History Collected in Antenatal Clinics

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A Utilitarian Comparison of Two Alcohol Use Biomarkers With Self-Reported Drinking History Collected in Antenatal Clinics

Philip A May et al. Reprod Toxicol. .
Free PMC article

Abstract

Background: Alcohol use is reported accurately among pregnant women in some populations.

Methods: Self-reported alcohol use via the AUDIT and 90-day recall for 193 women from antenatal clinics was compared to biomarker results: phosphatidylethanol (PEth) from bloodspots and ethyl glucuronide (EtG) in fingernails.

Results: AUDIT was positive for 67.9% of respondents, and 65.3% directly reported drinking. Individual biomarkers detected less drinking (PEth = 57.0%, EtG = 38.9%) than self-report. But 64.8% had drinking-positive values (>8 ng) on one or both biomarkers, which was not significantly different from self-report. Biomarkers indicated that 3.1% -6.8% of drinkers denied drinking. Combined biomarker sensitivity was 95% -80% and specificity 49% -76% for drinking in the previous 7-90 days. Combined biomarker results have their best yield (89.6%) and accuracy (78.8%) when measuring 90 day drinking.

Conclusions: Women reported their alcohol use accurately, and the combined use of PEth and EtG is supported.

Keywords: AUDIT; Alcohol; Biomarkers of alcohol use; Ethyl glucuronide (EtG); Phosphatidylethanol (PEth); Quantity and frequency of drinking; Self-report of alcohol use.

Figures

Figure 1
Figure 1
positive result indicating any alcohol use by two biomarkers and two methods of self-report

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