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BCH Order Code ESR Sedimentation Rate (ESR), Blood

Performing Laboratory

Boulder Community Health

Specimen Requirements

Specimen must arrive within 4 hours of collection if stored at room temperature or 12 hours if specimen is refrigerated.


Container/Tube: 4 mL Lavender-top (EDTA) tube(s) or 2 mL Lavender-top (EDTA) tube(s)

Specimen: 2 mL (minimum) of EDTA whole blood or 1 mL (minimum) of EDTA whole blood
Collection Instructions: Immediately invert 5 times to mix blood




The ESR is a nonspecific measurement used to detect and monitor an inflammatory response to tissue injury (an acute-phase response).

Reference Values


0-15 years: 0-10 mm/hour

16-50 years: 0-15 mm/hour

≥51 years: 0-20 mm/hour


0-15 years: 0-10 mm/hour

16-50 years: 0-20 mm/hour

≥51 years: 0-30 mm/hour

Day(s) Test Set Up

Monday through Sunday

Test Classification and CPT Coding