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Overview :
The erythrocyte sedimentation rate (ESR) may be affected by
variation in hematocrit, MCHC and serum protein. It is important to correct for
these factors to ensure an accurate interpretation.
corrected ESR in mm in 1 hour =
= ((((1.5 * (ESR)) + (1.9905 * C)) / ((100 / (hematocrit as
whole number)) - 1)) - (1.327 * C))
where:
• C = (((MCHC in g/dL) - (total protein in g/dL)) / 25)
Limitations:
• Anisocytosis
or poikilocytosis may interfere with rouleaux formation and cause large
variations in the sedimentation rate.
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