Medical | Science | Facts on Instagram: "Cerebrospinal Fluid (CSF) Collection CSF is a clear, colorless fluid that surrounds and protects your brain and spinal cord. It acts as a cushion, nutrient carrier, and waste remover for your central nervous system. The procedure to collect it is called a Lumbar Puncture (Spinal Tap) - where a needle is carefully inserted into the lower back to draw a small amount of fluid. This test helps doctors diagnose: Infections (like meningitis) Brain bleeding (sub