Police had carried out a blood test that proved he was drunk when they first interviewed him.

警方还对其进行了血液酒精含量检测，结果证明他当时的确是喝醉了。

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Iranian officials say a test showed that the Saudi diplomat was drunk.

BBC: Iran travel ban on Saudi diplomat for deadly car crash

Several writers have mentioned the breath test given to drivers suspected of being drunk, introduced when she was in charge of transport.

ECONOMIST: Barbara Castle

For instance, Olympic sprinter Linford Christie was cleared of wrongdoing despite failing a drugs test when it was discovered he had drunk ginseng tea.

BBC: Doping: Banned substances