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Codeine phosphate can be detected in a person's urine for 2-4 days, and in their blood for up to 12 hours. It can be detected in a person's saliva for 1-4 days. Codeine is an ingredient in many types of cough syrup.

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Velda Spinka

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2y ago
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9y ago

Codeine stays in your system for 2 to 4 days. The drug codeine converts to Morphine as it metabolizes. It will cause a positive testing for morphine.

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Q: How long does codein stay in your system?
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