Lifestyle
- Regular moderate exercise
- Stress management techniques
- Adequate sleep
White Blood Cells · WBC · Weiße Blutkörperchen
The WBC test quantifies the total number of white blood cells in a given volume of blood.
Reference ranges can vary slightly based on laboratory standards and individual factors such as age and sex.
White blood cells (WBCs), also known as leukocytes, are a critical component of the immune system, responsible for defending the body against infectious disease and foreign invaders. They are produced in the bone marrow and circulate throughout the blood and lymphatic system. WBCs are categorized into several types, including neutrophils, lymphocytes, monocytes, eosinophils, and basophils, each playing distinct roles in immune response. Clinically, WBC count is a fundamental part of a complete blood count (CBC) and serves as an indicator of immune system activity. Elevated WBC counts can indicate infection, inflammation, stress, or hematological disorders, while low counts may suggest bone marrow suppression, autoimmune conditions, or viral infections. In the context of athletic performance and biohacking, maintaining an optimal WBC count is crucial for recovery and resistance to infections, which can impact training outcomes and overall health. However, factors such as intense physical exertion, stress, and circadian rhythms can influence WBC levels. Researchers have noted that certain conditions, like post-COVID-19 syndrome, can cause persistent alterations in WBC counts, emphasizing the need for careful interpretation of results. Confounders such as recent infections, medications, and physiological stressors should be considered when evaluating WBC levels. Testing is typically performed without fasting, although consistency in testing conditions is advised for accurate longitudinal assessment.
Klinische Bedeutung
Elevated WBC levels may indicate infection, inflammation, stress, or hematological disorders. Reduced WBC levels can suggest bone marrow suppression, autoimmune diseases, or viral infections.
Progressively rising WBC counts may suggest an ongoing infection or inflammatory response. Re-test in 4 weeks if elevated.
Progressively falling WBC counts may indicate bone marrow suppression or recovery from an infection.
Re-test Interval
4 weeks if outside optimal range
Note:
Consult a healthcare provider before making significant lifestyle changes, especially if underlying health conditions are present.
WBC counts can vary with circadian rhythms; testing at the same time of day is recommended for consistency.
Testing Frequency
Annually for healthy adults, more frequently if monitoring a specific condition.
Current research suggests that the reference ranges for leukocyte counts, particularly in post-COVID-19 patients, remain debated, as persistent changes may not always fall outside established norms. Researchers have not yet established optimal targets for leukocyte differentials in various disease states, including osteoarthritis and infection. Additionally, clinical questions remain regarding the specific mechanisms linking leukocyte variations to disease progression and the potential role of novel biomarkers like fibulin-2 in improving diagnostic accuracy.
556
Total Citations
24
Human/RCT
2.3
Avg. Influence
2025
Latest
This study examined DNA methylation patterns in white blood cells as potential biomarkers for health outcomes. Researchers found associations between WBC methylation and various cancers, but noted that more extensive studies are needed to confirm these findings.
This study examined the use of digital image analysis for counting various blood cells, including white blood cells (WBCs). Researchers found that while automated microscopy analyzers can provide accurate WBC differential counts, manual microscopy remains essential for validating results flagged by analyzers.
In a study of mechanically ventilated patients during hemodialysis, researchers measured various respiratory and blood parameters. They found a significant decrease in white blood cell (WBC) counts, suggesting that leuko-agglutination may contribute to hypoxemia during dialysis.
Researchers reviewed the prevalence of leukocytosis in rheumatoid arthritis (RA) patients. They found that leukocytosis was more common in patients receiving steroid therapy and was associated with increased disease activity, underscoring the need for vigilance regarding potential infections.
Researchers investigated the relationship between white blood cell (WBC) and platelet counts with hepatic steatosis in a large cohort. They found significant associations between higher WBC counts and the severity of hepatic steatosis, suggesting that WBC counts may be useful in identifying at-risk individuals.
This study evaluated the role of white blood cell (WBC) and platelet counts in diagnosing dementia. Researchers found no significant differences in WBC counts between demented and non-demented patients, suggesting these are not suitable biomarkers.
This research aimed to develop reference values for blood parameters in Canary Island camels. Researchers reported a white blood cell (WBC) count range of 7.35 - 18.36 X103/µL, with variations based on age and sex.
This clinical study assessed fibulin-2 as a potential biomarker for early infection diagnosis. Researchers found that fibulin-2 levels were elevated in infected patients compared to non-infected individuals, outperforming traditional biomarkers like WBC in diagnostic ability.
This study analyzed cytokine expression profiles in white blood cells (WBCs) of patients with small fiber neuropathy (SFN). Researchers found higher expression levels of pro-inflammatory cytokines IL-2, IL-8, and TNF in SFN patients compared to healthy controls, which may aid in diagnostics.
This study established reference values for hematological parameters in Indian rhesus macaques. Researchers found that wild-born macaques had higher white blood cell (WBC) counts compared to inhouse animals, indicating differences based on origin.
Research publications about Leukozyten over time
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