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Test ID BLOD0637 ESR


Erythrocyte Sedimentation Rate, Sed Rate, Sedimentation Rate

Specimen Type/Requirements

Perform venipuncture according to standard operating procedure. Fill a 1.2 mL Streck ESR-Vacuum tube to the fill line indicated on the tube ± 5 mm. Immediately mix 8-10 times making sure the air bubble in the tube reaches the opposite end between each inversion.

Blood can also be transferred from a Purple (EDTA) Tube into a Streck ESR-Vacuum tube if done within 2 hours of collection and run immediately.

Specimen Volume

Preferred Volume

3.0 mL EDTA whole blood (in Purple Tube)

1.2 mL whole blood ± 5 mm in Streck ESR-Vacuum Tube

Minimum Volume

1.0 mL EDTA whole blood or 

1.2 mL whole blood ± 5 mm in Streck ESR-Vacuum Tube



Room Temperature

Black Streck Tube: 8 hours

Purple (EDTA) Tube: 2 hours

Refrigerated Black Streck Tube: 72 hours Preferred for Transport
Frozen N/A  


Performed Test Frequency



Modified Westergren method

Performing Lab

Sanford Laboratories Fargo-Core Lab


85651; 85652