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Sed Rate
Test CodeESR
Alias/See Also
ESR
Preferred Specimen
Whole blood: Full EDTA (lavender-top) tube
Minimum Volume
2 mL
Other Acceptable Specimens
Excyte ESR tube
Instructions
See test stability for further instructions
Transport Container
EDTA (lavender-top) tube
Transport Temperature
Refrigerated (cool packs)
Specimen Stability
EDTA tube:
Ambient: 4 hours
Refrigerated: 16 hours
Excyte tube:
Ambient: 2 hours
Refrigerated: 6 hours
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Clotted, greater than 16 hours old
Methodology
Excyte instrumentation
Setup Schedule
24/7
Report Available
Same day
Limitations
Patients with polycythemia and many hemoglobin abnormalities may have depressed sed rates whereas patients with anemia may have elevated sed rates.
Reference Range
See report
Clinical Significance
Useful in differentiating inflammatory and neoplastic diseases and as an index of disease severity. CRP is also useful in monitoring inflammatory disease states.
