As a Florida-based functional medicine telehealth provider, I often guide patients through interpreting lab tests. The Erythrocyte Sedimentation Rate (ESR) is a simple yet powerful indicator of systemic inflammation. By understanding its mechanism, reference ranges, and influencing factors, both clinicians and patients can better assess underlying health issues.
The ESR measures how quickly red blood cells settle in a vertical tube over one hour. Inflammatory proteins such as fibrinogen and globulins coat erythrocytes, causing them to aggregate and sink more rapidly. Conversely, albumin slows sedimentation by fostering cell repulsion.
During inflammatory states, acute phase reactants rise, enhancing red blood cell stacking (rouleaux formation). This accelerates the sedimentation rate. While ESR is non-specific, it flags the need for further evaluation when elevated.
For adult males (Westergren method):
Values above 15 mm/hr warrant investigation for inflammatory or tissue-destructive conditions.
A high sedimentation rate signals active inflammation or tissue damage and can accompany:
Lower-than-expected ESR may result from:
Be mindful of variables that skew ESR:
Medications can modulate ESR levels:
To corroborate ESR findings, consider:
In conclusion, integrating ESR testing into patient evaluations—under the guidance of a functional medicine provider—enhances our ability to detect and monitor inflammatory conditions. When paired with targeted nutrition, lifestyle interventions, and root-cause therapies, ESR becomes a cornerstone of comprehensive care. Explore our IV Therapy service to further support your inflammatory health.
Brigden, M. L. (1999). The erythrocyte sedimentation rate: Still a helpful test when used judiciously. Postgraduate Medicine, 106(5), 149-152.
https://pubmed.ncbi.nlm.nih.gov/10321151/
Pepys, M. B., & Hirschfield, G. M. (2003). C-reactive protein: A critical update. The Journal of Clinical Investigation, 111(12), 1805–1812.
https://pubmed.ncbi.nlm.nih.gov/12813013/
Brigden, M. L. (1999). Clinical utility of the erythrocyte sedimentation rate. American Family Physician, 60(5), 1443-1450.
https://pubmed.ncbi.nlm.nih.gov/10543602/
Sproston, N. R., & Ashworth, J. J. (2018). Role of C-reactive protein at sites of inflammation and infection. Frontiers in Immunology, 9, 754.
https://pubmed.ncbi.nlm.nih.gov/29922294/
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