LeukocyttallWBC

LeukocyttallWBC is a nonstandard label encountered in some medical datasets or laboratory reports to denote the total leukocyte count, the absolute number of white blood cells in a given volume of blood. Conceptually, it corresponds to what clinicians refer to as the white blood cell count (WBC) or leukocyte tally. The term is not widely used in routine practice, and standard laboratory reports typically present the value under the heading WBC.

Measurement and units: WBC values are usually expressed in SI units as x10^9 cells per liter (10^9/L) or per microliter (μL) in older conventions. A common adult reference range is approximately 4.0–11.0 x10^9/L, with pediatric ranges differing by age. Automated hematology analyzers perform this measurement; manual counting is rare but possible in specialized settings. The total WBC value does not reveal the distribution of different leukocyte types.

Clinical interpretation: An elevated WBC (leukocytosis) can reflect infections, inflammation, tissue damage, stress, corticosteroid use, or leukemias. A reduced WBC (leukopenia) may indicate bone marrow suppression, autoimmune disease, certain infections, drug effects, or severe illness. Because WBC is a nonspecific marker, clinicians often review the differential count—neutrophils, lymphocytes, monocytes, eosinophils, and basophils—for a more precise assessment. Factors like circadian variation, hydration status, and laboratory technique can influence values. When present, the term leukocyttallWBC should be correlated with standard WBC reporting and, if necessary, confirmed against a canonical lab result.