BIOLOGY | HEALTH | MEDICAL on Instagram: "Cerebrospinal fluid (CSF) is extracted through a lumbar puncture, also called a spinal tap, which involves a healthcare provider inserting a thin needle into the lower spine. To prepare, you will lie on your side with your knees to your chest, and a local anesthetic will be injected to numb the area. The needle is inserted between the vertebrae to access the subarachnoid space, where the CSF is collected for testing. Dm for credit or removal 🙏 For educa