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HematologyAge-Adjusted ESR

Age-Adjusted ESR Calculator

Estimate an empirical age- and sex-adjusted ESR upper reference value.

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years

Empirical age-adjusted ESR upper reference estimate

Empirical estimate only; compare with the reporting laboratory's method-specific interval

About

This calculator applies the Miller, Green, and Robinson empirical adult rule for an age- and sex-adjusted upper ESR reference estimate. It is not a laboratory reference interval and does not replace the range reported with an ESR result.

Formula

Male estimate (mm/hr) = age ÷ 2
Female estimate (mm/hr) = (age + 10) ÷ 2

Interpretation

What the result represents: An empirical upper reference estimate from a published adult population rule.

Input units: Age in completed years; result in millimeters per hour.

Worked example: At age 60, the estimate is 30 mm/hr for males and 35 mm/hr for females.

Applicable population: Adults; the source rule should not be extended automatically to children.

Interpretation limitations: Laboratory method and population matter. ESR can change with anemia, pregnancy, immunoglobulins, age, sex, and many diseases. This estimate cannot establish or exclude inflammation, infection, autoimmune disease, or malignancy.

References

  1. Miller A, Green M, Robinson D. Simple rule for calculating normal erythrocyte sedimentation rate. Br Med J. 1983;286:266.
  2. Brigden ML. Clinical utility of the erythrocyte sedimentation rate. Am Fam Physician. 1999;60:1443-1450.

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Disclaimer

Educational and informational reference only. Not intended to replace professional medical advice, diagnosis, treatment, or independent verification.