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Test Code SEDR Sedimentation Rate, Westergren, Blood


Infra-Red Light Transmission

Performing Laboratory

Aspen Valley Hospital

Physician Office Specimen Requirements

Specimen must arrive within ≤4 hours of draw.


Container/Tube:  Lavender-top (EDTA) tube(s) - No other anticoagulant is acceptable.

Specimen:  5 mL (minimum volume:  1.5 mL) of EDTA whole blood

Transport temperature:  Ambient

Collection Instructions:  Invert 8 times to mix blood.

Reference Values


0 days-50 years:  0-12 mm/hour

50-84 years:  0-20 mm/hour

≥85 years:  0-30 mm/hour


0 days-50 years:  0-20 mm/hour

50-84 years:  0-30 mm/hour

≥85 years:  0-42 mm/hour

Day(s) Test Set Up

Monday through Sunday

Test Classification and CPT Coding