ESR (Erythrocyte Sedimentation Rate) Test

ESR results rise naturally with age and tend to run higher in women than in men, so your lab's age- and sex-adjusted reference range is the most accurate guide.

A markedly elevated ESR (often above 100 mm/hr) usually points toward a significant underlying process such as infection, malignancy, or an autoimmune flare and typically prompts prompt further investigation.