Q:  What is the proper way to collect and handle blood samples?

A:  The Blood Collection Guidelines

Q:  Are there any prescription drugs that test positive on a standard drug screen?

A:  Cross Reactivity Chart

Q:  What is CLIA?

A:  Congress passed the Clinical Laboratory Improvement Amendments (CLIA) in 1988 establishing quality standards for all laboratory testing to ensure the accuracy, reliability and timeliness of patient test results regardless of where the test was performed.  Waived tests were defined as simple laboratory procedures cleared by the FDA for home use and incorporate methodologies  so easy and accurate that it is unlikely a mistakes would occur.

Q:  I have a client who had a UDS result come back positive for Methadone.  He suggested this positive could be attributed to the medication Nuycenta (an opioid agonist).  Can you verify if that is likely the cause of the positive methadone result?

A:   I think Nucynta (Tapentadol) is the medication that your client may have been prescribed.  Nucynta is an opioid agonist, but, it does not interfere with the Methadone drug screening test performed at Ammon Analytical Lab.
One suggestion for you to consider, is to request a confirmation test on this patient.  The confirmation will determine if Methadone was the source of the positive screening result.  We store urine samples for three weeks after receipt.  Therefore, depending on when this sample was received by Ammon a confirmation test is still a viable possibility.

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