Erythrocyte Sedimentation Rate

Inflammation marker

ESR

Erythrocyte Sedimentation Rate

Category: Inflammation
Unit: mm/hr

Non-specific marker of inflammation that measures how quickly red blood cells settle in a tube. Elevated in infection, autoimmune conditions, and chronic inflammation. Slower to rise and fall than CRP.

PED Notes

Complementary to CRP — ESR rises more slowly but stays elevated longer, making it useful for detecting chronic/ongoing inflammation. AAS-induced polycythemia (high RBC/haematocrit) can actually lower ESR because more packed red cells settle slower. If ESR is elevated despite high haematocrit, it suggests significant inflammation. Not typically a primary monitoring marker for PED users, but useful alongside CRP for a complete inflammatory picture.

When elevated (>15 mm/hr) -- chronic inflammation:

Supplements (anti-inflammatory stack):

  • Omega-3 (EPA/DHA) -- 2-3g/day (with fat-containing meals), reduces systemic inflammation
  • Curcumin (Turmeric Extract) -- 500-1000mg/day with black pepper (piperine) for absorption
  • Quercetin -- 500mg 2x/day, anti-inflammatory and antioxidant
  • Boswellia -- 300-500mg 2x/day, particularly effective for joint and musculoskeletal inflammation

Lifestyle:

  • Ensure rest-day blood draw (intense training transiently elevates inflammatory markers)
  • Improve sleep quality (7-9h) -- poor sleep is pro-inflammatory
  • Reduce processed foods and sugar
  • Address chronic stress

Interpretation notes:

  • ESR is complementary to CRP: CRP rises and falls quickly (acute), ESR rises slowly and stays elevated longer (chronic)
  • If ESR is elevated but CRP is normal, consider chronic low-grade inflammation or autoimmune conditions
  • AAS-induced polycythemia can falsely lower ESR -- an elevated ESR in a polycythemic athlete is especially significant

References:

  • Calder, P. C. (2017). Omega-3 fatty acids and inflammatory processes. Biochemical Society Transactions, 45(5), 1105-1115. DOI: 10.1042/BST20160474
  • Tabrizi, R., Vakili, S., Akbari, M., et al. (2019). The effects of curcumin-containing supplements on biomarkers of inflammation and oxidative stress. Phytotherapy Research, 33(2), 253-262. DOI: 10.1002/ptr.6226
  • Cos, P., Ying, L., Calomme, M., et al. (1998). Structure-activity relationship and classification of flavonoids as inhibitors of xanthine oxidase. Journal of Natural Products, 61(1), 71-76. DOI: 10.1021/np970237h

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Reference Ranges

Standard Range

0 - 15 mm/hr

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