Sign in →

Test Code ESR Sedimentation (Sed) Rate, Blood, LAB322

Performing Laboratory

St. Luke's Hospital Cedar Rapids

Specimen Requirements

Container/Tube:

Preferred: 600 uL whole blood lavender-top (EDTA) tube, venous collection or 500 uL whole blood pediatric BD Microtainer MAP tube (see picture below).
Minimum Volume: 350 uL in EDTA whole blood MAP tube

Stability: 4 hours at room temperature or 24 hours at 2-8oC.  Clotted specimens are unacceptable.

Reference Values

Age

Male

Female

<1 month

0 – 2 mm/hr

0 – 2 mm/hr

1 month – <19 yrs

0 – 13 mm/hr

0 – 13 mm/hr

19 yrs – <50 yrs

0 – 15 mm/hr

0 – 20 mm/hr

≥50 years

0 – 20 mm/hr

0 – 30 mm/hr

 

Day(s) Test Set Up

Monday through Sunday

Useful For

The ESR is used as a nonspecific indicator of infections, inflammatory states, autoimmune disorders and plasma cell dyscrasias.  Although it will denote the presence of disease, it does not indicate the severity.  

Methodology

The iSED® analyzer uses quantitative capillary photometry (aggregation) to directly measure erythrocyte sedimentation rate (ESR).

Test Classification and CPT Coding

85651

Analytical Time

Within 1 hour of receipt