ARUP's Laboratory Test Directory

Sedimentation Rate, Westergren (ESR) : 0040325

Mnemonic: WEST

Methodology: Westergren
Performed: Sun-Sat
Reported: Within 24 hours
Specimen Required: Collect:  One 7 mL black (sodium citrate).

Transport:  7 mL whole blood at 20-25°C.  Deliver to lab immediately.

Remarks:  Specimen should be run within four hours of collection.

Unacceptable Conditions:  Frozen, hemolyzed, or clotted samples.

Stability:  Ambient: 4 hours; Refrigerated: 24 hours; Frozen: Unacceptable
Reference Interval:
Male: 0-10 mm/hr
Female: 0-20 mm/hr
CPT Code(s): 85651
 
 

 

 

 
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