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Laboratory Test Directory

Sedimentation Rate (iSED) with re-base line (Wintrobe)


Name Method Department Units
Sedimentation Rate with re-base line Core Lab, Hematology mm/h

Battery Members


Specimen Requirements

Whole blood

Container Type Container Size Specimen Volume

Purple tube (EDTA)

3 mL 3 mL

Room temperature - 4 hour(s)
Refrigerated - 12 hour(s)

Specimen Preparation

  • Do not centrifuge

Reasons for Rejection

  • Clotted specimen
  • Wrong collection tube
  • Delayed or improper handling
  • Capillary specimen
  • Gross hemolysis
  • Sample collected in microtainer
  • Tube size larger/smaller than what is listed as acceptable
  • Tube/container size other than what is listed as acceptable
  • See comments for specific specimen rejection(s)


This test is to be used for patients that need re-baselined using new automated SED method.  Both new automated Modified Westergren (iSED) method and old Wintrobe ESR method will be run and resulted allowing a comparison of results.  The patient will only be charged for the new SED test.  No additional sample is needed as long as the minimum sample requirements are met. Microtainers and 6mL (13x100) tubes are not accpetable and will be rejected.

CPT Code

  • 85652