ESR Calculator — Age-Adjusted Normal Range
Find the age- and sex-adjusted upper limit of normal for the erythrocyte sedimentation rate (ESR) — known in several languages, including Romanian, as VSH (viteza de sedimentare a hematiilor). ESR is a simple, non-specific marker of inflammation, and its normal ceiling rises with age. Enter age and sex to see the upper limit, and optionally a measured ESR to see whether it is normal or raised.
About the ESR
The erythrocyte sedimentation rate measures how far red cells fall in a vertical tube of anticoagulated blood in one hour, rising with inflammation. The age-adjusted upper limit is a practical rule. Source: Miller A et al., “Simple rule for calculating normal erythrocyte sedimentation rate,” BMJ 1983;286(6361):266.
Frequently asked questions
What is the age-adjusted ESR formula?
The widely used rule of thumb gives the upper limit of normal in mm/hour as age divided by 2 for men, and (age + 10) divided by 2 for women. So a 60-year-old man has an upper limit of about 30 mm/hr, and a 60-year-old woman about 35 mm/hr. The formula reflects that ESR normally rises with age, and slightly higher in women.
What does a raised ESR mean?
ESR is a non-specific marker: a value above the age-adjusted limit points to inflammation somewhere but does not say where or why. Causes range from infection and autoimmune disease to tissue injury, anaemia and malignancy. A very high ESR (over about 100 mm/hr) makes significant disease such as infection, malignancy or vasculitis more likely and warrants investigation.
What is a normal ESR?
For younger adults, a typical ESR is roughly under 15 mm/hr in men and under 20 mm/hr in women, but the ceiling rises with age, which is why the age-adjusted formula is useful. Children and healthy young people usually have low values. Always compare against the reference range your own laboratory reports, as methods vary.
What can affect the ESR?
ESR can be raised by pregnancy, older age, anaemia, obesity and kidney disease without active inflammation, and it can be falsely low with polycythaemia, very high white-cell counts, sickle-cell disease or heart failure. It also changes slowly, so it lags behind the clinical picture. C-reactive protein (CRP) responds faster and is often measured alongside it.
Is ESR the same as VSH?
ESR and VSH are two names for the same test. VSH (viteza de sedimentare a hematiilor) is simply the Romanian name for the erythrocyte sedimentation rate; other languages have their own abbreviations (for example BSG in German, VS in French). They all refer to the same Westergren test — how far red cells settle in a tube of blood in one hour. This calculator is an educational reference, not medical advice.
This is a reference tool, not a diagnosis or medical advice. Results depend on the laboratory, assay and clinical context, and reference intervals vary between labs and by age and sex — always read your result against the range printed on your own report and discuss it with a qualified healthcare professional.
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