How Long Does Gabapentin Stay In Your Blood?

Gabapentin is a prescription anticonvulsant sold under brand names like Neurontin, Gralise, and Horizant, primarily used to treat seizures, nerve pain, and restless leg syndrome. While it has historically been considered a lower-risk medication, gabapentin misuse has been rising, particularly among people with opioid use disorder, who may use it to enhance opioid effects or ease withdrawal symptoms.

Because gabapentin is not included in standard drug panels, a specialized blood test must be ordered specifically to detect it. On average, gabapentin can be detected in blood for up to two days after the last dose, though this window can vary based on individual factors like kidney function, dosage, and frequency of use.

Detecting Gabapentin Through A Blood Test

Gabapentin is not picked up by routine blood drug screenings, detecting it requires a test that specifically targets the drug, which means healthcare providers or legal entities need to request it explicitly. This is an important distinction, since a person could have significant amounts of gabapentin in their system while still testing negative on a standard panel.

When a specialized test is used, gabapentin typically remains detectable in blood for up to 48 hours after the last dose. People with impaired kidney function may have a longer detection window, since the kidneys are the primary pathway through which gabapentin is eliminated from the body.

Factors That Affect How Long Gabapentin Stays In The Blood

There are a number of personal and biological factors that can affect how long it will take for gabapentin to be absorbed, metabolized, and eliminated from the bloodstream.

Factors that can affect the detection time of gabapentin include:

• age
• dosage
• duration of use
• poor kidney function
• use of other drugs (e.g. opioids, alcohol, benzodiazepines)
• body fat percentage

Average detection times for gabapentin will generally be extended for people who have impaired renal (kidney) function, due to how the drug is metabolized.

Why Do People Get Their Blood Tested For Gabapentin?

Gabapentin has been increasingly reported as a drug of abuse among people with a previous history of substance abuse and addiction. While not known to have a high addiction potential, gabapentin can produce mild euphoric effects that may be sought out by people without access to other drugs.

Gabapentin abuse may lead to physical dependence. If you’re physically dependent on gabapentin as a result of drug abuse, seeking out a detox program may be recommended.

Find Treatment For Gabapentin Misuse

It’s important to take gabapentin exactly as prescribed. Abusing gabapentin can be dangerous, especially if it’s taken with other powerful drugs.

Treatment options for gabapentin abuse may involve:

• detox
• counseling
• pain management
• inpatient rehab

Browse our directory or reach out to the Substance Abuse and Mental Health Services Administration (SAMHSA) for more information about addiction recovery.

Written by the Addiction Resource Editorial Staff