my friend is in rehab but for alcohol not drugs and traces of morphine were found in his urine sample but he has not used it and is scared of getting kicked out now
The only food I can think of that might cause a false positive for morphine would be poppy seeds. The use of certain cold syrups like Nyquil might also give a false positive. Did your friend eat any poppy seeds or take a cold formula before testing positive?
Just my thoughts,
Laurie is right, poppy seeds can show up. Especially since it was only traces of morphine. I think I read somewhere that 1tsp poppy seeds can be enough to show up on a standard test. The tests were recently changed to raise the lower levels that will indicate a positive result to help prevent false positives from poppy seeds but sometimes people can still ingest enough to give a positive result. See below for a paragraph copied from an article from Mayo clinic re: poppy seed consumption and urine testing and false positives.
Opiate screening cutoff levels for DHHS were changed from 300 ng/mL to 2000 ng/mL of morphine in December 1998 to avoid false-positive results from poppy-seed ingestion. However, the sensitivity for detecting true opiate use can be a concern,112 and most clinical laboratories continue to use the lower cutoff.53 Positive results for heroin abuse are caused by use of prescribed opiates, such as codeine and hydrocodone; however, ingestion of modest amounts of poppy seeds has been known to cause a positive result from urinalysis. Ingestion of poppy-seed cookies (containing about 1 teaspoon of poppy-seed filling available commercially in the United States for baking) produced positive results for opiates within 2 hours of ingestion among 5 patients.62 Codeine was also found in a concentration of 20 ng/mL in 2 samples 2 hours after ingestion. Urine samples analyzed after 24 hours were negative for opiates. Similar results were seen in another analysis in which consumption of poppy-seed bagels produced positive results for codeine and morphine up to 25 hours after ingestion.60 A single bagel was estimated to contain 1.5 mg of morphine and 0.1 mg of codeine. Similar results were observed in other analyses with slight variations ranging from 1 hour for earliest detection of morphine to 60 hours for the latest detection.20
Rifampin and rifampicin have also been known to interfere with opiate immunoassays.55-57,61 In one case report involving 3 patients, the 1-step chromatographic assay produced false-positive results when urine samples were tested 1 hour after rifampin administration. All 3 samples were negative by urinalysis using the competitive binding immunoassays and GC-MS. The interference occurred in concentrations as low as 0.05 mg/L. Rifampicin was shown to cause false-positive results in 2 reports56,57 and has 12% cross-reactivity. A single oral dose of 600 mg of rifampicin has been detected within 18 hours after ingestion (about 24 hours among patients with renal dysfunction or dehydration).56 The color of the drug was not shown to interfere with the reaction. Quinolones also have been known to cause false-positive results on urine screens for opiates.53,59
So this could be your friends reason for showing morphine. Also as Laurie mentioned, cough syrups can contain codeine whic breaks down into norcodeine and morphine so the traces may have been from that. I think that cough preparations that have dextromethorphan can also give false positives for opiates. I hope this helped some.
- Morphine Information for Consumers
- Morphine Information for Healthcare Professionals (includes dosage details)
- Side Effects of Morphine (detailed)
Search for questions
Still looking for answers? Try searching for what you seek or ask your own question.
Posted 10 Sep 2010 • 8 answers
Posted 10 Jan 2012 • 1 answer
Posted 24 Feb 2013 • 1 answer
Posted 11 Nov 2014 • 2 answers
Posted 11 Nov 2015 • 3 answers