1. What is ALC Absolute Lymphocytes?

ALC (Absolute Lymphocyte Count) is a measurement of the total number of lymphocytes in the blood. Lymphocytes are a type of white blood cell that play important roles in the immune system, including fighting infections and producing antibodies.

2. How Does the Calculator Work?

The calculator uses the ALC formula:

Where:

• \( WBC \) — White Blood Cell count (cells/μL)
• \( Lymph \% \) — Lymphocyte percentage (%)

Explanation: The formula calculates the absolute number of lymphocytes by multiplying the total white blood cell count by the percentage of lymphocytes.

3. Importance of ALC Calculation

Details: ALC is important for assessing immune function, monitoring response to infections, evaluating immunodeficiency states, and tracking recovery from chemotherapy or bone marrow suppression.

4. Using the Calculator

Tips: Enter WBC count in cells/μL and lymphocyte percentage (0-100%). Both values must be valid positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What is a normal ALC range?
A: Normal ALC ranges from 1,000 to 4,800 cells/μL in adults, though ranges may vary slightly by laboratory and age.

Q2: What does low ALC indicate?
A: Low ALC (lymphopenia) may indicate viral infections, autoimmune disorders, malnutrition, or immunosuppressive conditions.

Q3: What does high ALC indicate?
A: High ALC (lymphocytosis) may indicate bacterial infections, viral infections, leukemia, or chronic inflammatory conditions.

Q4: How often should ALC be monitored?
A: Frequency depends on clinical context - during infections, chemotherapy, or immunosuppressive therapy, monitoring may be more frequent.

Q5: Are there limitations to ALC calculation?
A: ALC provides quantitative information but doesn't differentiate between lymphocyte subtypes (T-cells, B-cells, NK cells) which may require flow cytometry.