Indicator Explainer
Leukocyte
Blood cells that are devoid of hemoglobin, capable of ameboid motion and phagocytosis, and act as the principal components of the immune system.
This page explains what the indicator is and how results are interpreted in general terms. Reference ranges depend on the laboratory, the method, and your own situation — no single “normal value” applies to everyone. This page is health information, not a diagnosis. For symptoms, treatment, or urgent concerns, contact a healthcare professional.
When it is tested
Source: National Cancer Institute, NCI Thesaurus 26.09d, C12529. NCI definition, reproduced without modification under CC BY 4.0. Source identity and definition checked automatically on 2026-10-19. No individual clinical interpretation or human reviewer is asserted.
Reading results
Reference intervals and interpretation depend on the laboratory, specimen, method and clinical context. This source definition is educational information; it does not establish a diagnosis, product approval or suitability for an individual.
Also Known As
Related Tests
Tests that measure or involve this indicator.
References
- NCI Thesaurus 26.09d — Leukocyte (C12529)
- Source: National Cancer Institute, NCI Thesaurus 26.09d, C12529. NCI definition, reproduced without modification under CC BY 4.0.
- The Leukocyte Landscape Across Mouse Strains and Tissues. — Immunol Cell Biol, 2026-10-08 (PMID 42847131; literature)
- Early changes in circulating cytokines and leukocyte profiles after bariatric surgery: a six-month prospective study. — Hum Immunol, 2026-10-07 (PMID 42843158; literature)
- Standardized Preparation and Characterization of Leukocyte-Rich and Leukocyte-Poor PRP Using PrecurCell® Kits. — Transfus Clin Biol, 2026-10-12 (PMID 42863752; literature)
- Comparison of bone repair of advanced platelet-rich fibrin (A-PRF) and leukocyte- and platelet-rich fibrin (L-PRF) following the extraction of impacted third molars: a randomized clinical trial. — Oral Maxillofac Surg, 2026-10-29 (PMID 42955100; literature)
- Human leukocyte antigen loss as a mechanism of immune escape after allogeneic stem cell transplantation in a patient with mycosis fungoides. — Haematologica, 2026-10-29 (PMID 42952452; literature)