Will gabapentin make me fail a drug test?
Photo Credit: Courtesy of 3DStockPhoto (A Will image)
It's not going to show up on drug tests like these substances unless it is specifically tested for. However, if it were tested for, Neurontin could show up in a blood or urine test for around two days after it was last taken. ... Someone with renal failure could test positive for gabapentin for around 30 days.