Does neurontin show up in drug tests?

Neurontin (Gabapentin) dose not show "fail positive " in standard drug tests but will show up if they test your urine protein level (tests like Ames N-Multistix SG, Chemstrip 3 - gabapentin causes a false positive result)

More info at www.labtestsonline.org

but if you have a prescription its generally best to notify them before hand

also you can test your self using 12 panel home drug test (check for all drug classes and prescribed medication) order online or look at your local pharmacy places

Depends on what type of test it is. Neurontin will show up if that's what the test is looking for.