Neutrophil-Lymphocyte Ratio (NLR) Calculator
Calculates neutrophil-lymphocyte ratio.
Launched during COVID-19 crisis.
Using either the absolute count or the percentage/relative count from a CBC with differential will yield the same NLR result.
Advice
The NLR should always be interpreted in the clinical context of the patient and not be used in isolation to diagnose or rule-out disease, however it may be a more useful test than ones medicine routinely uses, like the WBC.
Management
The NLR can be trended over time which has been shown to be useful in prognostication of several diseases including intracranial hemorrhage and sepsis.