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Test Mnemonic SEDR Sedimentation Rate, RBC


Clinical Significance:

Monitor therapy in inflammatory diseases reflects acute phase reactant levels. Primarily used in diagnosis of rheumatoid diseases.

Performing Laboratory

Hallmark Health

Physician Office Specimen Requirements

Container/Tube:  Black-top EDTA or Vacu-tecTM tube(s) - Clotted or underfilled tube is not acceptable.

Specimen:  1 mL of EDTA whole blood

Transport Temperature:  Refrigerate

Collection Instruction:  Fill tube completely.

Reference Values


<50 years:  0-15 mm/hr

≥50 years:  0-20 mm/hr


<50 years:  0-20 mm/hr

≥50 years:  0-30 mm/hr

Additional Information


Anemia and paraproteinemia alter the results. Westergren sedimentation rates will be increased during pregnancy.