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  • Wiley  (2)
  • Ibsen, Inge Olga  (2)
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  • Wiley  (2)
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  • 1
    In: Basic & Clinical Pharmacology & Toxicology, Wiley, Vol. 128, No. 5 ( 2021-05), p. 709-715
    Abstract: The metabolite of ethanol, ethyl glucuronide (EtG), reflects alcohol intake longer than ethanol and is used as a biomarker in clinical settings to detect alcohol use. We aimed to assess the clinical usefulness in a low‐to‐moderate alcohol intake setting and validate a new urine EtG dipstick. A three‐way, open, cross‐over trial was conducted. Data were collected from January to June 2019. Among 12 healthy female volunteers, we quantified urine EtG and used a dipstick following intake of either one, two or four units of alcohol. Main outcomes were concentrations of EtG in urine and serum, and creatinine and ethanol in serum. EtG in urine was determined dichotomously by dipsticks at two different thresholds and by mass spectrometry used as gold standard. EtG in urine was quantifiable up to 24 hours after alcohol intake. In some individual cases, EtG was quantifiable up to 72 hours at low concentrations. The dipstick detected EtG in urine up to 24 hours. At thresholds of 1000 and 1500 ng/mL, the dipsticks had a specificity of 100% (both), while sensitivity was 84% and 69%, respectively. The sensitivity of the dipsticks was insufficient to support a screening purpose in this setting of low‐to‐moderate alcohol intake.
    Type of Medium: Online Resource
    ISSN: 1742-7835 , 1742-7843
    URL: Issue
    Language: English
    Publisher: Wiley
    Publication Date: 2021
    detail.hit.zdb_id: 2151592-X
    SSG: 15,3
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  • 2
    In: Acta Obstetricia et Gynecologica Scandinavica, Wiley
    Abstract: There is a paucity of objectively verified data on substance use among Danish pregnant women. We estimated the prevalence of substance use including alcohol and nicotine among the general population of Danish pregnant women. Material and Methods In this anonymous, national, cross‐sectional, descriptive study, pregnant women were invited when attending an ultrasound scan between November 2019 and December 2020 at nine Danish hospitals. Women submitted a urine sample and filled out a questionnaire. Urine samples were screened on‐site with a qualitative urine dipstick for 15 substances including alcohol, nicotine, opioids, amphetamines, cannabis, and benzodiazepines. All screen‐positive urine samples underwent secondary quantitative analyses with gold standard, liquid chromatography‐tandem mass spectrometry (LC–MS/MS) analysis. Results were compared to questionnaire information to analyze the validity of self‐reporting and to examine possible cross‐reactions. Results A total of 1903 of 2154 invited pregnant women participated (88.3%). The prevalence of dipstick‐positive urine samples was 25.0%. 44.0% of these were confirmed positive, resulting in a total confirmed prevalence of 10.8%. The prevalence of nicotine use was 10.1%—and for all other substances, 〈 0.5%. Nicotine use was more prevalent among younger pregnant women, while other substance use appeared evenly distributed over age groups. Self‐reporting of use of nicotine products was high (71.1%), but low for cannabis and alcohol intake (0% and 33.3%, respectively). Prescription medication explained almost all cases of oxycodone, methylphenidate, and benzodiazepine use. Conclusions Substance use among pregnant women consisted mainly of nicotine. Dipstick screening involved risks of false negatives and false positives. Except for alcohol intake and cannabis use, dipstick analyses did not seem to provide further information than self‐reporting. LC–MS/MS analyses remain gold standard, and future role of dipstick screenings should be discussed.
    Type of Medium: Online Resource
    ISSN: 0001-6349 , 1600-0412
    RVK:
    Language: English
    Publisher: Wiley
    Publication Date: 2024
    detail.hit.zdb_id: 2024554-3
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