Neutrophil_Lymphocyte_Ratio_NLR_Calculator v.1

Neutrophil-Lymphocyte Ratio (NLR) Calculator calculates neutrophil-lymphocyte ratio.

Therese Lindberg

therese.lindberg@cambio.se

@CambioCDS

To calculate neutrophil-lymphocyte ratio.

Neutrophil-lymphocyte ratio (NLR) = (Absolute neutrophil count, cells/μL) / (Absolute lymphocyte count, cells/μL) Note: Neutrophil and lymphocyte can also be entered as percentages. Neutrophil-lymphocyte ratio Physiologic stress level 1-3 Normal 4-5 Not known 6-8 Mild 9-18 Moderate >18 Severe

1. Zahorec R. Ratio of Neutrophil to Lymphocyte Counts--Rapid and Simple Parameter of Systemic Inflammation and Stress in Critically Ill.Bratisl Lek Listy. 2001;102(1):5-14.

OBSERVATION.lab_test-full_blood_count.v1, EVALUATION.neutrophil_lymphocyte_ratio_calculator.v0, OBSERVATION.covid_gram_critical_illness_risk_score.v0