The page below is a sample from the LabCE course The Toxicology Laboratory's Role in Pain Management. Access the complete course and earn ASCLS P.A.C.E.-approved continuing education credits by subscribing online.

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Scenario 1
A patient with a urine creatinine of 25 mg/dL who has reportedly been taking codeine has codeine present in her urine but no morphine present. Which statement is true?

Please select the single best answer