Platelet-to-lymphocyte ratio
Blood cell systemPLR reflects the relationship between platelets which participate in clotting and inflammation and lymphocytes which support immune balance.
Why this matters
PLR serves as a simple yet powerful marker of systemic inflammation and immune balance. Elevated PLR indicates increased inflammatory burden and has been linked to poor outcomes in cardiovascular disease, cancer prognosis, and autoimmune conditions. It helps predict risk of heart attacks and strokes, as high ratios reflect both pro-thrombotic and pro-inflammatory states. Low PLR may suggest viral infections, certain blood disorders, or immunosuppression.
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