{"term":{"id":"09641","title":"cerebrospinal fluid","longtitle":"IUPAC Gold Book - cerebrospinal fluid","doi":"10.1351\/goldbook.09641","code":"09641","status":"current","initialism":"<em>initialism<\/em>: CSF","definitions":[{"id":1,"text":"Clear, colourless fluid that fills spaces within and around the central nervous system.","notes":{"1":"CSF originates from plasma by a biological ultrafiltration process. Specimens are obtained by a lumbar puncture (i.e. a spinal tap)."},"sources":["PAC, 2018, 90, 1121. 'Terminology of bioanalytical methods (IUPAC Recommendations 2018)' on page 1124 (https:\/\/doi.org\/10.1515\/pac-2016-1120)"]}],"altoutputs":{"html":"https:\/\/goldbook.iupac.org\/terms\/view\/09641\/html","xml":"https:\/\/goldbook.iupac.org\/terms\/view\/09641\/xml","plain":"https:\/\/goldbook.iupac.org\/terms\/view\/09641\/plain"},"citation":"Citation: 'cerebrospinal fluid' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. 10.1351\/goldbook.09641","license":"The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International (https:\/\/creativecommons.org\/licenses\/by-sa\/4.0\/) for individual terms.","collection":"If you are interested in licensing the Gold Book for commercial use, please contact the IUPAC Executive Director at executivedirector@iupac.org .","disclaimer":"The International Union of Pure and Applied Chemistry (IUPAC) is continuously reviewing and, where needed, updating terms in the Compendium of Chemical Terminology (the IUPAC Gold Book). Users of these terms are encouraged to include the version of a term with its use and to check regularly for updates to term definitions that you are using.","accessed":"2026-08-01T17:55:03+00:00"}}