Erythrocyte sedimentation rate also know as ESR or Sed-Rate is a test used to evaluate the nonspecific activity of infections, inflammatory states, plasma cell dyscrasias and, autoimmune disorders.
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Erythrocyte Sedimentation Rate, Modified Westergren
Modified Westergren; automated
• Male: 0 to 50 years: 0−15 mm/hour, 50 years and older: 0−30 mm/hour
• Female: 0 to 50 years: 0−32 mm/hour, 50 years and older: 0−40 mm/hour
Sed-Rate, Erythrocyte Sedimentation Rate, ESR, Westergren Sedimentation Rate
Mainstream Diagnostic Laboratory, 5354 Gulf Dr., New Port Richey, FL 34652
2 mL (Note: This volume does not allow for repeat testing.)
Invert tube immediately 8 to 10 times once tube is filled at time of collection.
Lavender-top (EDTA) tube
Refrigerated - 24 hours
Hemolysis; clotted specimen; underfilled tube; specimen older than 24 hours; improper labeling; transfer tubes with whole blood; specimen received in any anticoagulant other than EDTA; specimen diluted or contaminated with IV fluid; patient specimen with presence of cold agglutinins or cryoglobulins; specimen received with plasma removed.