Accessing the subarachnoid space via intrathecal needle placement can be done in nonhuman primates (NHPs) and other species to collect cerebral spinal fluid (CSF) or to deliver agents into the CSF.
A CSF leak occurs when cerebrospinal fluid (CSF) escapes from the protective layer surrounding the brain and spinal cord. This is a serious condition that can cause headaches, seizures, or meningitis.