Performance of a web-based application measuring spot quality in dried blood spot sampling.

Clinical Chemistry and Laboratory Medicine : CCLM
Herman VeenhofJan-Willem C Alffenaar

Abstract

Background The dried blood spot (DBS) method allows patients and researchers to collect blood on a sampling card using a skin-prick. An important issue in the application of DBSs is that samples for therapeutic drug monitoring are frequently rejected because of poor spot quality, leading to delayed monitoring or missing data. We describe the development and performance of a web-based application (app), accessible on smartphones, tablets or desktops, capable of assessing DBS quality at the time of sampling by means of analyzing a picture of the DBS. Methods The performance of the app was compared to the judgment of experienced laboratory technicians for samples obtained in a trained and untrained setting. A robustness- and user test were performed. Results In a trained setting the app yielded an adequate decision in 90.0% of the cases with 4.1% false negatives (insufficient quality DBSs incorrectly not rejected) and 5.9% false positives (sufficient quality DBSs incorrectly rejected). In an untrained setting this was 87.4% with 5.5% false negatives and 7.1% false positives. A patient user test resulted in a system usability score of 74 out of 100 with a median time of 1 min and 45 s to use the app. Robustness testing showed a rep...Continue Reading

References

Dec 23, 2006·Journal of Pharmaceutical and Biomedical Analysis·K HoogtandersL M L Stolk
Apr 8, 2009·Therapeutic Drug Monitoring·Peter M EdelbroekLeo M L Stolk
Jan 1, 2005·Hereditary Cancer in Clinical Practice·Marian Je MouritsJakob de Vries
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Sep 18, 2015·Journal of the American Medical Informatics Association : JAMIA·Mattias Georgsson, Nancy Staggers
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Jul 9, 2016·Journal of Pharmaceutical and Biomedical Analysis·Yeliz EnderleJürgen Burhenne
Jun 7, 2019·Therapeutic Drug Monitoring·Marlanka A ZuurJan-Willem C Alffenaar

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Citations

Oct 31, 2019·Clinical Chemistry and Laboratory Medicine : CCLM·Rosita Zakaria, Ronda F Greaves
Jan 25, 2021·Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences·Camille TronFlorian Lemaitre
Mar 25, 2021·Environmental Science & Technology·Aaron J SpechtMarc G Weisskopf

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