During a lumbar puncture, also known as a spinal tap, you typically lie on your side with your knees drawn up to your chest. Then a needle is inserted into the spinal canal in your lower back to collect cerebrospinal fluid for testing.
Mayo Clinic does not endorse companies or products. Advertising revenue supports our not-for-profit mission.
Check out these best-sellers and special offers on books and newsletters from Mayo Clinic Press.
Mayo Clinic researchers drive discoveries that improve detection, diagnosis and treatment. Your quick message to them means so much.