B-sample

British  

noun

1. a urine or blood sample used in doping tests in professional sports to confirm or invalidate the presence of banned substances in the first sample, the A-sample See also A-sample

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Example Sentences

"The athlete has been informed. She has the right to request the analysis of the B-sample," said the ITA.

From BBC

Officials said Kermond was banned from competing in the Olympics but had the right to have his B-sample analyzed.

From Fox News

It said Kermond was banned from competing at the Tokyo Olympics but had the right to have his B-sample analyzed.

From Seattle Times

"Her urine was consistent with the consumption of pork that was containing high levels of nandrolone. We told this to the lab before her B-sample was tested. Under the rules they were supposed to account for it. When your urinary markers are where they were with Shelby’s – in the very, very low range – it is impossible for the machine that does the testing to distinguish between these two," Greene said.

From Fox News

“We’re not naming the athlete or the discipline until results of the B-sample are known, which normally will happen within the next 24 hours,” he said.

From The Wall Street Journal