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Chemosphere. 2014 Dec;116:75-82. doi: 10.1016/j.chemosphere.2014.04.007. Epub 2014 May 1.

Pilot study to assess effects of collection tube types and processing delay on measurements of persistent organic pollutants and lipids in human serum.

Author information

1
California Department of Toxic Substances Control, 700 Heinz Ave., Berkeley, CA 94710, USA. Electronic address: weihong.guo@dtsc.ca.gov.
2
Cancer Prevention Institute of California, Berkeley, CA 94704, USA.
3
California Department of Toxic Substances Control, 700 Heinz Ave., Berkeley, CA 94710, USA; Sequoia Foundation, La Jolla, CA 92037, USA.
4
California Department of Toxic Substances Control, 700 Heinz Ave., Berkeley, CA 94710, USA.

Abstract

Glass red top tubes (RTs), traditionally used to draw blood for biomonitoring studies, have some limitations during field sampling (e.g., tube breakage, timely processing may be difficult). This pilot study examined whether serum separation tubes (SSTs) with delayed processing time (48 h) can be used instead of red top tubes (RTs) to accommodate field conditions. Using state-of-the-art methodologies, PBDEs, PCBs, OCPs, PFCs, cholesterol and triglycerides were measured to evaluate any differences among 2 test conditions (RTs with 2h processing time; SSTs with 48 h processing time). Between the 2 test conditions, we observed high rank correlations among the measured compounds and no statistically significant differences in the levels of measured compounds. We conclude that SSTs with delayed processing time (48 h) produce similar results as RTs with short processing time (2h), suggesting that SSTs could be good substitutes for RTs for new epidemiological and biomonitoring field studies. The use of SSTs offers a tremendous opportunity for the use of samples archived in various SSTs.

KEYWORDS:

Organochlorine pesticides (OCPs); Perfluorinated compounds (PFCs); Polybrominated diphenyl ethers (PBDEs); Polychlorinated biphenyls (PCBs); Red top tubes (RTs); Serum Separation Tubes (SSTs)

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