Low Erythrocyte Sedimentation Rate (ESR): what it means
A Erythrocyte Sedimentation Rate (ESR) result below the normal range is considered low. Here is what a reduced Erythrocyte Sedimentation Rate (ESR) can point to, and when it is worth discussing with a doctor.
Reference range: <15 mm/hr (men), <20 mm/hr (women); rises with age
Understand your full resultWhat a low Erythrocyte Sedimentation Rate (ESR) can mean
- Polycythaemia — more red cells slow the fall.
- Sickle cell disease, hereditary spherocytosis — abnormal cell shape resists clumping.
- Congestive heart failure, severe hypofibrinogenaemia — protein patterns lower the rate.
- A low ESR by itself is not clinically actionable.
When to discuss with a doctor
ESR >50 mm/hr in an older patient with new headache, scalp tenderness or jaw pain is a same-day rheumatology consultation — suspected giant-cell arteritis. ESR + CRP together that don't return to normal after a treated infection raise the question of a persistent cause. Mediora.AI shows the value in context; ESR alone is not a diagnostic test.
Conditions this can relate to
Keep reading
One value is a snapshot. Upload the full test to see every marker explained together.
Upload your test - freeMediora.AI is informational - interpretation, not a diagnosis. A single out-of-range value is common and often benign; always discuss decisions with your doctor.