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. 2019 Oct 1;6(1):e000357. doi: 10.1136/vetreco-2019-000357

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© British Veterinary Association 2019. Re-use permitted under CC BY-NC. No commercial re-use. Published by BMJ.

This is an open access article distributed in accordance with the Creative Commons Attribution Non Commercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited, an indication of whether changes were made, and the use is non-commercial. See: http://creativecommons.org/licenses/by-nc/4.0/.

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Box and whisker plots comparing cfDNA concentrations in a heterogeneous group of dogs measured in three different sample types (citrate plasma, EDTA plasma, plasma derived from Streck BCT tubes that include a preservative to limit cell lysis). The centre line represents the median, the boxes represent the IQR and the whiskers represent the minimum and maximum values. Concentrations of cfDNA were significantly different in citrate samples compared with both EDTA the Streck tube samples. There was no difference between the cfDNA concentrations in EDTA samples compared with Streck tube samples. cfDNA, cell-free DNA; EDTA, ethylenediamine tetraacetic acid.