A-sample

noun

1. 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

Example Sentences

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.

From BBC

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.

From Fox News

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.

From Seattle Times

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

From Washington Times

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

From BBC