Arsenic in urine and hair or nails is the key to diagnosis. Treatment involves washing out the stomach and promptly administering the antidote dimercaprol.

• 确诊砷中毒以从尿、头发、指甲中检出砷化物为依据。急性砷中毒的治疗包括洗胃和及时服用二巯基丙醇。