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Lymphocytes (Absolute Lymphocyte Count) Unit Converter
Lymphocytes are a type of white blood cell (WBC) fundamental to the adaptive immune system, encompassing T cells, B cells, and Natural Killer (NK) cells. The Absolute Lymphocyte Count (ALC) measures the total concentration of these cells in a blood sample. [Image of white blood cell types and functions]
ALC is crucial for evaluating immune status. Lymphopenia (low ALC) is often seen in severe viral infections (like HIV), malnutrition, or chemotherapy. Lymphocytosis (high ALC) is common in acute viral infections (like mononucleosis) or certain hematological malignancies (e.g., Chronic Lymphocytic Leukemia – CLL). This converter switches between the standard SI unit (× 109 / L) and the conventional unit (× 103 / μL).
SI Units
RecommendedGiga per liter (Cells per liter).
Conventional Units
Clinical Context
Reference Range (Adults): Typically 1.0 – 4.8 × 109 / L (1,000 – 4,800 / μL).
Lymphopenia (< 1.0 × 109 / L) is a serious finding often indicating immune compromise. ALC is calculated as: ALC = WBC × (Lymphocyte Percent / 100). The numerical conversion is a simple 1:1 ratio: 1 x 10^9 / L = 1 x 10^3 / μL.
Clinical References
How to Use This Calculator
Follow these steps to get accurate clinical conversions instantly.
Enter Values
Input your laboratory results into the corresponding unit field (e.g., x 10^9 / L). You can use either dot or comma decimals.
Automatic Conversion
The calculator works in real-time using the 1:1 numerical ratio between the primary units.
Verify Units
Check the SI Units section. 1 × 103 / μL is numerically identical to 1 × 109 / L.
Reset
Use the Clear button to reset all fields before starting a new calculation.
Frequently Asked Questions & Tips
Yes. Due to volume conversions (1 L = 1,000,000 μL), the factor of 103 per μL exactly equals the factor of 109 per L.
The normal range is wide, typically between 1.0 and 4.8 when reported in the SI unit (× 109 / L).