Yes. Venlafaxine is one of the 76 compounds in the LabX LC-MS/MS confirmation panel, reported as detected at or above 50 ng/mL. Venlafaxine is not one of the 12 lines on the LabX 12-panel screen. It is identified by adding laboratory confirmation, which tests for all 76 compounds on the panel.
Venlafaxine is a serotonin-norepinephrine reuptake inhibitor (SNRI) antidepressant. The body converts it into O-desmethylvenlafaxine, which is also prescribed as desvenlafaxine.
Also known as or found in: Effexor.
Venlafaxine is prescribed for depression, generalized anxiety disorder, social anxiety disorder and panic disorder.
Venlafaxine is measured by liquid chromatography with tandem mass spectrometry (LC-MS/MS), which separates the compounds in a sample and identifies each one by its mass. That is different from a rapid screen, which reacts to a family of drugs and can occasionally react to a related substance. The laboratory reports Venlafaxine as detected when its concentration is at or above the cut-off of 50 ng/mL, within a reportable range of 50–5,000 ng/mL. It is one of 14 compounds in the antidepressants family on the 76-drug confirmation panel.
The laboratory's confirmation report does not print a standard detection window for Venlafaxine. How long any compound stays measurable varies with the amount taken, how often it is used, metabolism and hydration, and a laboratory result cannot be used to work out when a substance was taken.
Venlafaxine is not one of the 12 lines on the LabX 12-panel screen. It is identified by adding laboratory confirmation, which tests for all 76 compounds on the panel.
Venlafaxine and O-desmethylvenlafaxine are reported separately, and a reviewer reads them together with the person's prescriptions.
Commonly prescribed antidepressants and their metabolites. They are not part of standard drug screens and are identified when a clinician needs a full medication picture.
Yes. Venlafaxine is one of the 76 compounds in the LabX LC-MS/MS confirmation panel, reported as detected at or above 50 ng/mL. Venlafaxine is not one of the 12 lines on the LabX 12-panel screen. It is identified by adding laboratory confirmation, which tests for all 76 compounds on the panel.
LabX reports Venlafaxine as detected at or above 50 ng/mL, and the method's reportable range is 50–5,000 ng/mL. A result below the cut-off is reported as not detected; it does not prove none was present.
The laboratory report does not print a standard window for Venlafaxine. Detection time varies with dose, frequency of use, metabolism and hydration.
Venlafaxine is not one of the 12 lines on the LabX 12-panel screen. It is identified by adding laboratory confirmation, which tests for all 76 compounds on the panel.
Venlafaxine is prescribed for depression, generalized anxiety disorder, social anxiety disorder and panic disorder.
Terms on this page: metabolite · cut-off · detection window · presumptive result · confirmation test. More questions: LabX answers.
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