IOC Schmid Commission - Report secondary analyses of urine specimens from the Vancouver and Sotchi Winter Olympic Games

Expert Medical Report : Objective of the report: Secondary analyses of urine specimens collected among athletes having participated to the Vancouver and Sotchi Winter Olympic Games / Michel Burnier. - Lausanne : Lausanne University Hospital, 2017

Report prepared at the request of: Dr. Neil Robinson Project Manager - Anti-doping re-analysis and research Medical and Scientific Department International Olympic Committee (IOC)

Report published in Appendix-VIII of the IOC Schmid Commission Report
__________________________________________________

Summary of conclusions:

Professor Michel Burnier has been asked to:
1.) To determine reference values for various urinary analytes (Na, K, Cl, Ca, creatinine, urine density) coming from samples taken from top level athletes tested at the time of XXI Olympic Winter games in Vancouver.
2.) To determine for each sample collected at the time of the XXII Olympic Winter Games and analyzed for the same analytes, if the values are within the reference values obtained from the control population at the XXI Olympic Winter Games and in agreement with data published.

In the presented analyses, it has been assessed the distribution of urinary sodium, potassium, chloride and calcium concentrations in 250 samples for the XXI Olympic Winter games and calculated for each parameter: the mean ± standard deviation and upper and lower 95% confidence intervals, the median with the 5% and % percentiles. Statistical characteristics were done for women and men separately. For urinary creatinine, similar characteristics cannot be given because urinary creatinine depends on many factors including age, sex, body weight and urinary volume which are not available. Gravity was within the normal range of 1000 to 1035 in all samples.

Regarding samples of the XXII Olympic Winter Games, similar statistical analyses were performed but with the identification of potential true outliers defined as greater than the mean of Vancouver data + 3 standard deviations. With this approach, 13 samples were indentified (of 5 men and 8 women) which are definitively out of range and even out of renal physiological possibilities suggesting strongly a manipulation of the samples, for ex. an addition of sodium chloride (NaCl).

show »
Type:
pdf

Parameters:

Laboratories
Montreal, Canada: Laboratoire de controle du dopage INRS-Institut Armand-Frappier
Moscow, Russia: Antidoping Centre Moscow [*]
[Satellite laboratory] Sochi (RUS)
[Satellite laboratory] Vancouver (CAN)
Date:
5 October 2017
Source
International Olympic Committee (IOC)
Country
Switzerland
Language
English
ADRV
Adverse Analytical Finding
Complicity
Tampering
Use
Document type
pdf
Laboratories/Analysis
Reanalysis
Organisations
Centre Hospitalier Universitaire Vaudois (CHUV) - Lausanne University Hospital
International Olympic Committee (IOC)
University of Lausanne
Various
Disappearing Positive Methodology
Doping Control
Schmid Commission
Category
  • (Medical) Science
  • Doping classes
  • Education
  • History
  • Laboratories
  • Legal
  • Statistics
Publication period
Origin
Country & language
  • Country
  • Language
Other filters
  • ADRV
  • Document category
  • Document type
  • Health/Medical
  • IF'S
  • Laboratories/Analysis
  • Legal Terms
  • Organisations
  • Substances
  • Various
  • Version