Preanalytical mixing of whole-blood specimens in the context of the athlete passport

Michael Ashenden, Anthea Clarke, Ken Sharpe, Giuseppe D'Onofrio, Graeme Allbon, Christopher J. Gore

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Background: Full blood counts are now used as evidence that athletes have used banned blood doping. This has led to legal scrutiny of the efficacy of preanalytical procedures such as specimen homogenisation. Aims: To characterise the impact of different mixing strategies on whole-blood homogeneity. Methods: Manual inversion, mechanical mixing and automatic mixing performed by the Sysmex XT-2000i were evaluated. Results: Automated mixing by the instrument, or 1 min of mechanical mixing, thoroughly homogenised specimens even for tubes that had been refrigerated and left undisturbed for 36 h. Manual inversions were almost as effective, provided that specimens were first allowed to equilibrate to ambient temperatures. Conclusions: Current sport guidelines that mandate at least 15 min of mechanical mixing are excessive. Except where specimens are presented to the instrument manually, mechanical mixing is redundant in the context of full blood counts.

Original languageEnglish
Pages (from-to)8-13
Number of pages6
JournalJournal of Clinical Pathology
Volume65
Issue number1
DOIs
Publication statusPublished - Jan 2012
Externally publishedYes

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Athletes
Doping in Sports
Sports
Guidelines
Temperature

Cite this

Ashenden, Michael ; Clarke, Anthea ; Sharpe, Ken ; D'Onofrio, Giuseppe ; Allbon, Graeme ; Gore, Christopher J. / Preanalytical mixing of whole-blood specimens in the context of the athlete passport. In: Journal of Clinical Pathology. 2012 ; Vol. 65, No. 1. pp. 8-13.
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Ashenden, M, Clarke, A, Sharpe, K, D'Onofrio, G, Allbon, G & Gore, CJ 2012, 'Preanalytical mixing of whole-blood specimens in the context of the athlete passport', Journal of Clinical Pathology, vol. 65, no. 1, pp. 8-13. https://doi.org/10.1136/jclinpath-2011-200269

Preanalytical mixing of whole-blood specimens in the context of the athlete passport. / Ashenden, Michael; Clarke, Anthea; Sharpe, Ken; D'Onofrio, Giuseppe; Allbon, Graeme; Gore, Christopher J.

In: Journal of Clinical Pathology, Vol. 65, No. 1, 01.2012, p. 8-13.

Research output: Contribution to journalArticle

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