ALC — Absolute Lymphocyte Count Calculator

Calculates the Absolute Lymphocyte Count (ALC) from a complete blood count (CBC) differential. ALC = WBC × (% lymphocytes / 100). The ALC is a clinically critical derived value used in immunology, hematology, oncology, and infectious disease to quantify the total circulating lymphocyte population, assess immune competence, identify lymphopenia (ALC < 1.0 × 10⁹/L), lymphocytosis (ALC > 4.0 × 10⁹/L), and monitor immunosuppression or lymphoid malignancies.