HealthCareMagic is now Ask A Doctor - 24x7 | https://www.askadoctor24x7.com

question-icon

What Causes False Positive Meth Results?

default
Posted on Wed, 26 Feb 2014
Question: i recently had a false positive of meth at a level 0.005 show in a blood test i am on albeutrol sulfate inhaler and inabulaizer, morphine sulfate, oxycodone, xanax, mobic, lantus, novolog,lyrica XXXXXXX everyday i had surgery and was given methadone also to help with pain where i have been on pain managment for years when i had my teeth cut out. i also have allergies and had been sick and taken sudafed with my albutrol and afrin nasal spray will that cause such a low false poaitive i truly do not do meth never seen it. they also put me to sleep but i dont know with what medication
doctor
Answered by Dr. Michelle Gibson James (22 minutes later)
Brief Answer: may be due to one of sudafed components Detailed Answer: HI, thanks for using healthcare magic There are quite a few drugs that can cause false positive meth results. Included in the potential list of agents that can cause a false positive result are ephedrine and pseudoephedrine. These are decongestants and it is possible that one of these may be in the sudafed that you were using for your allergies. You should inform the person or persons responsible for conducting the test about this potential interaction. There are additional confirmatory tests that can be done in some cases to more accurately determine if meth is present. I hope this helps, feel free to ask any other questions
Note: For more detailed guidance, please consult an Internal Medicine Specialist, with your latest reports. Click here..
Above answer was peer-reviewed by : Dr. Chakravarthy Mazumdar
doctor
Answered by
Dr.
Dr. Michelle Gibson James

General & Family Physician

Practicing since :2001

Answered : 16808 Questions

Ask me a question
premium_optimized

The User accepted the expert's answer

Ask an Internal Medicine Specialist
Share on

Get personalised answers from verified doctor in minutes across 80+ specialties

159 Doctors Online

By proceeding, I accept the Terms and Conditions

HCM Blog Instant Access to Doctors
HCM Blog Questions Answered
HCM Blog Satisfaction
backtotop2
What Causes False Positive Meth Results?

Brief Answer: may be due to one of sudafed components Detailed Answer: HI, thanks for using healthcare magic There are quite a few drugs that can cause false positive meth results. Included in the potential list of agents that can cause a false positive result are ephedrine and pseudoephedrine. These are decongestants and it is possible that one of these may be in the sudafed that you were using for your allergies. You should inform the person or persons responsible for conducting the test about this potential interaction. There are additional confirmatory tests that can be done in some cases to more accurately determine if meth is present. I hope this helps, feel free to ask any other questions