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The Journals of Gerontology Series B: Psychological Sciences and Social Sciences Advance Access originally published online on February 25, 2009
The Journals of Gerontology Series B: Psychological Sciences and Social Sciences 2009 64B(Supplement 1):i131-i136; doi:10.1093/geronb/gbn022
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© The Author 2009. Published by Oxford University Press on behalf of The Gerontological Society of America. All rights reserved. For Permissions, please e-mail: journals.permissions@oxfordjournals.org.

The Use of Dried Blood Spot Sampling in the National Social Life, Health, and Aging Project

Sharon R. Williams1 and Thomas W. McDade2

1 Department of Sociology, Purdue University, West Lafayette, Indiana
2 Department of Anthropology and Cells to Society (C2S): The Center on Social Disparities and Health at the Institute for Policy Research, Northwestern University, Evanston, Illinois

Address correspondence to Sharon Williams, PhD, Department of Anthropology, Purdue University, 700 West State Street, West Lafayette, IN 47907. Email: srw{at}purdue.edu


  Abstract

Objectives: This paper describes the methods used for and issues associated with collection and analysis of dried blood spot (DBS) samples for the National Social Life, Health, and Aging Project and provides the basic distributions of the resulting analytes.

Methods: DBSs from capillary finger sticks were collected by nonmedically trained interviewers from 2,044 individuals, aged 57–85 years. The quality and quantity of DBS samples were evaluated to allow for analysis of interviewer performance. Levels of C-reactive protein, antibodies to the Epstein–Barr virus, hemoglobin, and glycosylated hemoglobin were assayed using various analytic methods.

Results: Cooperation rate for DBS collection was 84.5%, with 99% of the cards yielding enough sample for at least one analysis. The distribution, mean, and standard deviation of the analytes obtained from DBSs are also presented in this paper.

Conclusions: The high cooperation rate and quality of the spots collected suggest that the collection of DBSs in population-based research is a feasible and viable alternative to venous blood draws. The relative ease of sample collection, transport, and storage are significant benefits. Care should be taken, however, when comparing results from analysis of DBS samples with those obtained from serum or plasma samples.

Key Words: Biomeasures • Dried blood spots • Aging

Received July 22, 2008; Accepted October 28, 2008

Decision Editor: Robert B. Wallace, MD, MSc


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