Neutrophil-lymphocyte ratio and absolute lymphocyte count
Inflammation marker and absolute lymphocyte count from the differential.
Inputs
0 of 3× 10³/µL
%
%
When to use
- Assessing inflammation or lymphopenia (for example, PJP prophylaxis decisions).
Pearls and pitfalls
- Normal NLR in adults is roughly 1–3; above 6–9 suggests significant physiologic stress.
- ALC below 1,000/µL is lymphopenia.
Why use
Two common derived values at once.
NLR = neutrophils ÷ lymphocytes; ALC = WBC × lymphocytes %