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J Anal Toxicol. 1987 May-Jun;11(3):97-9.

Excretion of codeine and morphine following ingestion of poppy seeds.


After the ingestion of three poppy-seed bagels, the following codeine and morphine concentrations were determined in the urine: 214 ng/mL codeine and 2797 ng/mL morphine at 3 h, and 16 ng/mL codeine and 676 ng/mL morphine at 22 h. This work indicates that a positive finding of codeine or morphine in the urine of an individual does not necessarily indicate heroin, morphine, or codeine use.

[Indexed for MEDLINE]

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