Yes. Butalbital is one of the 76 compounds in the LabX LC-MS/MS confirmation panel, reported as detected at or above 100 ng/mL. The LabX 12-panel screen includes a Barbiturates line designed to pick up Butalbital. A screen is presumptive; adding laboratory confirmation identifies Butalbital specifically.
Butalbital is a barbiturate, an older class of sedative medicines. It is found in combination headache products.
Also known as or found in: Fioricet.
Butalbital is prescribed in combination with acetaminophen or aspirin, and caffeine, for tension headaches.
Butalbital 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 Butalbital as detected when its concentration is at or above the cut-off of 100 ng/mL, within a reportable range of 100–10,000 ng/mL. It is one of 9 compounds in the muscle relaxants, sedatives and analgesics family on the 76-drug confirmation panel.
The laboratory's confirmation report lists an approximate detection window of 1 day-3 weeks for Butalbital. Treat that as a rough guide only: how long any compound stays measurable varies with the amount taken, how often it is used, body composition, metabolism, kidney and liver function, and hydration. A laboratory result cannot be used to work out when a substance was taken.
The LabX 12-panel screen includes a Barbiturates line designed to pick up Butalbital. A screen is presumptive; adding laboratory confirmation identifies Butalbital specifically.
Butalbital is a common reason a barbiturate screen is positive. Confirmation identifies butalbital specifically, separating it from phenobarbital.
Muscle relaxants, barbiturates, nerve-pain medicines and acetaminophen, several of which are monitored in pain management and treatment programs.
Yes. Butalbital is one of the 76 compounds in the LabX LC-MS/MS confirmation panel, reported as detected at or above 100 ng/mL. The LabX 12-panel screen includes a Barbiturates line designed to pick up Butalbital. A screen is presumptive; adding laboratory confirmation identifies Butalbital specifically.
LabX reports Butalbital as detected at or above 100 ng/mL, and the method's reportable range is 100–10,000 ng/mL. A result below the cut-off is reported as not detected; it does not prove none was present.
The laboratory lists an approximate window of 1 day-3 weeks, but it varies with dose, frequency of use, metabolism and hydration, and cannot be used to tell when something was taken.
The LabX 12-panel screen includes a Barbiturates line designed to pick up Butalbital. A screen is presumptive; adding laboratory confirmation identifies Butalbital specifically.
Butalbital is prescribed in combination with acetaminophen or aspirin, and caffeine, for tension headaches.
Terms on this page: metabolite · cut-off · detection window · presumptive result · confirmation test. More questions: LabX answers.
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