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Integrated Metabolomics Assessment of Human Dried Blood Spots and Urine Strips

BERG, 500 Old Connecticut Path, Bldg. B, Framingham, MA 01701, USA
Author to whom correspondence should be addressed.
Academic Editor: Vidya Velagapudi
Metabolites 2017, 7(3), 35;
Received: 6 June 2017 / Revised: 3 July 2017 / Accepted: 12 July 2017 / Published: 15 July 2017
(This article belongs to the Special Issue Clinical Metabolomics)
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(1) Background: Interest in the application of metabolomics toward clinical diagnostics development and population health monitoring has grown significantly in recent years. In spite of several advances in analytical and computational tools, obtaining a sufficient number of samples from patients remains an obstacle. The dried blood spot (DBS) and dried urine strip (DUS) methodologies are a minimally invasive sample collection method allowing for the relative simplicity of sample collection and minimal cost. (2) Methods: In the current report, we compared results of targeted metabolomics analyses of four types of human blood sample collection methods (with and without DBS) and two types of urine sample collection (DUS and urine) across several parameters including the metabolite coverage of each matrix and the sample stability for DBS/DUS using commercially available Whatman 903TM paper. The DBS/DUS metabolomics protocols were further applied to examine the temporal metabolite level fluctuations within hours and days of sample collection. (3) Results: Several hundred polar metabolites were monitored using DBS/DUS. Temporal analysis of the polar metabolites at various times of the day and across days identified several species that fluctuate as a function of day and time. In addition, a subset of metabolites were identified to be significantly altered across hours within a day and within successive days of the week. (4) Conclusion: A comprehensive DBS/DUS metabolomics protocol was developed for human blood and urine analyses. The described methodology demonstrates the potential for enabling patients to contribute to the expanding bioanalytical demands of precision medicine and population health studies. View Full-Text
Keywords: human; dried blood spot (DBS); dried urine strip (DUS); metabolomics; chromatography; mass spectrometry human; dried blood spot (DBS); dried urine strip (DUS); metabolomics; chromatography; mass spectrometry

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Drolet, J.; Tolstikov, V.; Williams, B.A.; Greenwood, B.P.; Hill, C.; Vishnudas, V.K.; Sarangarajan, R.; Narain, N.R.; Kiebish, M.A. Integrated Metabolomics Assessment of Human Dried Blood Spots and Urine Strips. Metabolites 2017, 7, 35.

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