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Test Code ESR Erthrocyte Sedimentation Rate

Aliases

Sed Rate, WSR

Useful For

Non-specific test used to detect inflammation associated with infections, cancers, and autoimmune diseases.

Collection Method

Venous Draw

Minimum Volume

1 mL EDTA tube, 500 uL MAP (microtainer) tube

Container

Purple (EDTA)

Preferred Specimen

3 or 4 ml EDTA tubes

Acceptable Specimens

EDTA Whole Blood, BD EDTA MAP tube

Reference or Target Ranges

Males   Females    
0-28 Days 0 – 2 mm/hr 0-28 Days 0 – 2 mm/hr
28 days to 12 years 0 – 13 mm/hr 28 days to 12 years 0 – 13 mm/hr
12 years to 50 years 0 – 15 mm/hr 12 years to 50 years 0 – 20 mm/hr
50 years to 150 years 0 – 20 mm/hr 50 yeras to 150 years 0 – 30 mm/hr

Reportable Units

mm/hr

Critical Value

Not defined for this assay

Reasons for Rejection

Hemolysis Threshold N/A
Icterus Threshold N/A
Lipemia Threshold N/A
Other QNS, Clotted, Contaminated, Improperly Labeled

Specimen Stability

Ambient 24 hours
Refrigerated (4°C to 8°C) 24 hours
Frozen(-70°C to 0°C) N/A

Performance Information

Days and Time Performed 24/7
Expected Turn Around Time Routine within 4 hours of arrival in lab
Stat Availabilty No
Performing Bench UH or WCH Hematology
Methodology/Method Description Alcor iSED® – The iSED® analyzer, manufactured by Alcor Scientific Inc., uses quantitative capillary photometry (aggregation) to measure erythrocyte sedimentation rate (ESR) faster than traditional methods by capturing the kinetics of Red Blood Cell aggregation in a controlled testing environment during the most critical phase of sedimentation, commonly referred to as the lag or Rouleaux formation phase.

CPT Codes

85652