Gamma-Aminobutyric Acid (GABA) in Cerebrospinal Fluid (CSF) by Mass Concentration

Why Might This Test Be Ordered?

Your healthcare provider may recommend this test if you have symptoms like seizures, epilepsy, movement disorders, or neurological issues that suggest abnormal GABA activity. It could also be part of a broader evaluation for conditions like brain tumors, infections, or metabolic disorders affecting brain chemistry.

What Does a Result Mean?

GABA levels in CSF are not typically compared to a standard reference range in the same way as blood tests, as they vary widely based on neurological state and health. Results are interpreted in the context of your symptoms, medical history, and clinical findings by your healthcare team.

How Is the Test Performed?

A small amount of cerebrospinal fluid is collected through a procedure called a lumbar puncture (spinal tap). This involves inserting a needle into your lower back to draw fluid from your spinal canal. The fluid is then sent to the lab for testing.

What Should You Expect Before or After the Test?

Before the test, inform your provider if you have any infections, recent head trauma, or conditions that may increase your risk of complications. After the procedure, you may experience mild back pain or headache, which can be managed with rest and over-the-counter pain relievers. Avoid heavy lifting or strenuous activity for 24 hours.