Sedimentation Rate

Test ID: 

704403

CPT code:

85652

Synonyms:

Sedimentation Rate, Modified Westergren

Erythrocyte Sedimentation Rate

ESR

Westergren Sedimentation Rate

Clinical Use:

Evaluate the nonspecific activity of infections, inflammatory states, autoimmune disorders, and plasma cell dyscrasias

Test Information:

Elevations in fibrinogen, α- and β-globulins (acute phase reactants), and immunoglobulins increase the sedimentation rate of red cells through plasma. The test is important in the diagnosis of temporal arteritis, as well as its management.

Specimen Type:

Whole blood

Requested Volume: 

Whole blood

Minimum Volume: 

2 mL

Collection:

Invert tube immediately 8 to 10 times once tube is filled at time of collection.

Storage Instructions:

Refrigerate

Stability Requirements:

Expected Turnaround Time:

1 to 2 Days

Rejection Criteria

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