I agree with the Doctor. It takes a LOT of poppy seeds to show up in a urine analysis. I do know the poppy seeds in California do show up positive in a drug test with just ONE muffin. I had a friend that was on Probation, and he didn't do drugs. But when had to be drug screened the day after eating the poppy seed muffin, it did show up positive, and he had to go to jail. So it depends where the seeds came from. Some won't show them at all in a drug test, some do. It's just how it is. And if you live in California, and eat a poppy seed muffin it will show positive up to 48 hours after ingestion. There was a story of a police officer that got suspended from his jon with no pay, because he ate a Poppy seed muffin the day before. It really matters where the seeds came from.
While working at an urgent care center a patient came in for a required drug screening to get a job. Her test came back positive. She explained to them that she had eaten lemon poppy seed cake the day prior to taking the test. She wasn't aware that she should avoid eating it. The lab and the doctors at both facilities agreed that there was no way eating poppy seed cake could create a positive drug test, they informed the employer, also. She was denied the job. She returned to our facility a couple of weeks later with poppy seed cake. She requested that a urine sample be taken prior to eating the cake. She then sat there and consumed the same amount of poppy seed cake that she had the day prior to the original drug screen test. Approximately two hours after eating the poppy seed cake she requested that another urine sample be taken "post poppy seed consumption". When the test results came back the first urine sample, before eating the poppy seed cake, came back negative for opiates.