- 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
Example Sentences Including 'B-sample'
Only Shang Shichun, China's 75kg women's world champion, has asked for the B-sample to be tested.
The Australian (2004)
Rai's B-sample proved he had used the banned stimulant strychnine to win the clean-and-jerk and overall titles in the 77kg class.
Sun, News of the World (2002)
to comment on this word.