title: Pilot study to assess effects of collection tube types and processing delay on measurements of persistent organic pollutants and lipids in human serum.
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.
authors.affiliation: California Department of Toxic Substances Control, 700 Heinz Ave., Berkeley, CA 94710, USA. Electronic address: weihong.guo@dtsc.ca.gov.
authors.forename: W
authors.initials: W
authors.lastname: Guo
authors.affiliation: Cancer Prevention Institute of California, Berkeley, CA 94704, USA.
authors.forename: D
authors.initials: D
authors.lastname: Nelson
authors.affiliation: Cancer Prevention Institute of California, Berkeley, CA 94704, USA.
authors.forename: S
authors.initials: S
authors.lastname: Hurley
authors.affiliation: Cancer Prevention Institute of California, Berkeley, CA 94704, USA.
authors.forename: P
authors.initials: P
authors.lastname: Reynolds
authors.affiliation: California Department of Toxic Substances Control, 700 Heinz Ave., Berkeley, CA 94710, USA; Sequoia Foundation, La Jolla, CA 92037, USA.
authors.forename: T
authors.initials: T
authors.lastname: Guo
authors.affiliation: California Department of Toxic Substances Control, 700 Heinz Ave., Berkeley, CA 94710, USA.
authors.forename: M
authors.initials: M
authors.lastname: Wang
authors.affiliation: California Department of Toxic Substances Control, 700 Heinz Ave., Berkeley, CA 94710, USA.
authors.forename: J-S
authors.initials: JS
authors.lastname: Park
authors.affiliation: California Department of Toxic Substances Control, 700 Heinz Ave., Berkeley, CA 94710, USA.
authors.forename: M
authors.initials: M
authors.lastname: Petreas
mesh_terms: D001800:Blood Specimen Collection / Q000295:instrumentation* / Q000379:methods*; D002784:Cholesterol / Q000097:blood*; D004784:Environmental Monitoring; D004785:Environmental Pollutants / Q000097:blood*; D005466:Fluorocarbons / Q000097:blood; D055768:Halogenated Diphenyl Ethers / Q000097:blood; D006801:Humans; D006843:Hydrocarbons, Chlorinated / Q000097:blood; D010575:Pesticides / Q000097:blood; D010865:Pilot Projects; D011078:Polychlorinated Biphenyls / Q000097:blood; D013997:Time Factors; D014280:Triglycerides / Q000097:blood*
chemical_list: D004785:Environmental Pollutants; D005466:Fluorocarbons; D055768:Halogenated Diphenyl Ethers; D006843:Hydrocarbons, Chlorinated; D010575:Pesticides; D014280:Triglycerides; D002784:Cholesterol; D011078:Polychlorinated Biphenyls
keywords: Organochlorine pesticides (OCPs); Perfluorinated compounds (PFCs); Polybrominated diphenyl ethers (PBDEs); Polychlorinated biphenyls (PCBs); Red top tubes (RTs); Serum Separation Tubes (SSTs)