Title: leukocytopenia Long Title: IUPAC Gold Book - leukocytopenia DOI: 10.1351/goldbook.13382 Status: current Definition Amount of leukocytes below normal values that is a characteristic feature of systemic autoimmune diseases [e.g., Felty syndrome, systemic lupus erythematosus (SLE), Sjögren syndrome, mixed connective tissue disease (MCTD)]. Related Terms - Sjögren syndrome: https://goldbook.iupac.org/terms/view/13680 - leukocytes: https://goldbook.iupac.org/terms/view/13379 - mixed connective tissue disease (MCTD): https://goldbook.iupac.org/terms/view/13465 - systemic autoimmune diseases: https://goldbook.iupac.org/terms/view/13709 - systemic lupus erythematosus (SLE): https://goldbook.iupac.org/terms/view/13710 Source - PAC, 2012, 84, 1113. 'IUPAC glossary of terms used in immunotoxicology (IUPAC Recommendations 2012)' on page 1201 (https://doi.org/10.1351/PAC-REC-11-06-03) Other Outputs - html: https://goldbook.iupac.org/terms/view/13382/html - json: https://goldbook.iupac.org/terms/view/13382/json - xml: https://goldbook.iupac.org/terms/view/13382/xml Citation: Citation: 'leukocytopenia' 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.13382 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: 2026-05-11T05:15:31+00:00