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ERYTHROCYTE SEDIMENTATION RATE (ESR) MODIFIED WESTERGREN METHOD

Item Value
Approval req'd? no
Available Stat? No
Test code ESR
Performed by? Hematology
Sendout? no
Price range $
In House Availability 24 hours/ 7 days
Principle RBC sedimentation in a standard system is affected by plasma proteins (especially fibrinogen and globulin) that increase in infections and inflammatory disorders.
Interpretation Elevated ESR generally suggests infection, inflammation or tissue destruction, but is sometimes observed in normal individuals (especially over age 65), and in pregnancy. Elevated ESR are also seen in malignancies and paraproteinurias (multiple myeloma).
Container type EDTA (lavender top) tube
Amount to Collect 1.5 mL
Sample type EDTA Whole blood
Normal range
Conventional Units SI Units
Children: 0 - 10 mm/hr 0- 10 mm/hr
< 50 men: 0 - 15 mm/hr 0- 15 mm/hr
> 50 men: 0 - 20 mm/hr 0- 20 mm/hr
< 50 women: 0 - 20 mm/hr 0- 20 mm/hr
> 50 women: 0- 30 mm/hr 0- 30 mm/hr
Synonyms ESR;
Stability 8 hours at room temp (20-30°C).
References 1. Harmening, D. (ed): Clinical Hematology and Fundamentals of Hemostasis, 4th ed., F.A. Davis Co., Philadelphia, PA. 2002: 575-576.

2. National Committee for Clinical Laboratory Standards (NCCLS), Reference and Selected Procedure for the Erythrocyte Sedimentation Rate (ESR) Test; 4th ed. H2-A4, 2000.
CPT coding 85651
Last Updated 11/8/2010 7:42:12 PM
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