A drowsy patient with a positive purple urine test.

Abstract
We report a pitfall in the investigation of amphetamine poisoning by urine test. A 21-year-old female who came to hospital with drowsiness and was reported to have positive purple urine test. This false positive urine test occurred as a result of drugs and substances of the same structure. Specific investigations were further recommended in order to detect the use of the amphetamines and allow appropriate treatment.
Description
Keywords
Aphetamine, Metamphetamine, purple urine test
Citation
Kolladarungkri Teera, Wongchanapai Wichai, Jonggarearnprasert Kowit, Tumwipart Narongpon. A drowsy patient with a positive purple urine test. Siriraj Medical Journal, 2001 Dec; 53(12): 917-921.