general-medicine
Neutrophil-to-Lymphocyte Ratio (NLR)
Simple inflammatory index calculated from FBC. Elevated NLR (>3.5–5) indicates systemic inflammation, infection, or stress. Useful prognostic marker in sepsis, cancer, cardiovascular disease, and COVID-19. Low NLR (<1) may suggest immunosuppression or viral illness.
References
- Forget P et al. What is the normal value of the neutrophil-to-lymphocyte ratio? BMC Res Notes. 2017;10(1):12.
Related
Curated clinical cross-links plus same-class fallbacks.
Drugs
- Colchicine (Pericarditis / Post-MI Inflammation) · Pericarditis / Coronary Inflammation
- Dapsone · Anti-inflammatory / Antimicrobial
- Colchicine · Anti-inflammatory — Neutrophilic Dermatoses / Vasculitis
- Belimumab (Cutaneous Lupus) · BLyS/BAFF Inhibitor (Anti-B-Lymphocyte Stimulator)
- Dexamethasone · Corticosteroid — ENT Inflammation / Croup
- Diclofenac · Non-Steroidal Anti-Inflammatory Drug (NSAID)
Decision support only — verify against MDCalc, NICE, or your local guideline before clinical use.