A-sample

noun

the primary urine or blood sample used in doping tests in professional sports; if the A-sample tests positive, the B-sample is tested to confirm or invalidate the results See also B-sample

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Example Sentences

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Romero was set to meet unbeaten world title holder Alberto Puello but the Dominican returned a positive A-sample for a performance-enhancing substance last month and was made a "champion in recess" on Wednesday.

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Equestrian Australia said earlier Kermond returned a positive A-sample for a metabolite of cocaine following a test conducted by Sport Integrity Australia on June 26.

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The governing body said Jamie Kermond returned a positive A-sample for a metabolite of cocaine following a test conducted by Sport Integrity Australia on June 26.

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New Zealand Rugby Players’ Association chief executive Rob Nicol said it was not yet clear why Tuipulotu’s A-sample had tested positive.

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The Olympic Council of Ireland said the fighter is provisionally suspended from competition after an "adverse analytical" finding in an A-sample.

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