ESR (Erythrocyte Sedimentation Rate): normal range & what your result means

Q: What is the difference between ESR and CRP?

Both track inflammation. CRP rises and falls quickly (good for acute change); ESR rises and falls slowly. They are often done together.

Q: What does a very high ESR mean?

A markedly high ESR needs a cause found — infections, autoimmune disease and some cancers can raise it. It is a clue, not a diagnosis.

The ESR is an older, simple marker of inflammation — how fast red cells settle in a tube. It rises slowly and stays up longer than CRP.

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Typical adult reference range

Measure	Range
Men	< 15–20 mm/hr (age-dependent)
Women	< 20–30 mm/hr (age-dependent)

What a HIGH result can mean

A high ESR reflects inflammation, infection, anaemia or, when very high, conditions like some cancers or autoimmune disease

What a LOW result can mean

A low ESR is normal and not a concern

Ranges vary by lab. Reference ranges are TYPICAL ADULT values and vary by laboratory, age, sex, pregnancy and the method used. Always read your result against the range printed on YOUR report, and let your doctor interpret it alongside your history.

Frequently asked questions

What is the difference between ESR and CRP?

Both track inflammation. CRP rises and falls quickly (good for acute change); ESR rises and falls slowly. They are often done together.

What does a very high ESR mean?

A markedly high ESR needs a cause found — infections, autoimmune disease and some cancers can raise it. It is a clue, not a diagnosis.

Upload your report to MedDroid →

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MedDroid is an AI medical assistant and can make mistakes. It provides general health information, not a diagnosis or medical advice — always consult a qualified clinician. In an emergency, contact your local emergency number immediately.