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If you eat a lot of Poppy seeds can you return a non-negative drug test result. Can the AusHealth toxicologists explain how this happens?

Yes. Poppy seeds can contain Opiates & Codeine. 

Poppy Seeds

Australian grown poppy seeds are known to be particularly rich in opiate content. A teaspoon of seeds (5g) can result in a strong non-negative result and a confirmed positive lab test.

Given the fact that poppy seeds are commonly used in food (e.g. in salad dressings, in some casseroles and curries, and as toppings on baked goods) there is a need to be careful here. Whenever possible, AusHealth recommends declaring poppy seed ingestion if it happens a day or so before an on-site test.

For more information please contact our AusHealth Toxicologists at

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