Sed Rate by Modified Westergren
Test code
CPT code(s)*
Test resources
Details
Methodology
Modified Westergren
Alternative name(s)
WSR,Zeta Rate,Sedimentation Rate,Erythrocyte Sedimentation Rate,ESR
Specimen requirements | |
|---|---|
| Patient preparation | None Specified |
| Preferred specimen(s) | Whole blood: Full EDTA (lavender-top) tube |
| Minimum volume | 2 mL |
| Collection instructions | Maintain specimen at room temperature. If multiple tests are ordered, please submit one full tube for this test. |
| Transport container | EDTA (lavender-top) tube |
| Transport temperature | Room temperature |
| Specimen stability | Room temperature: 24 hours Refrigerated: 24 hours |
| Reject criteria | Hemolysis • Samples >24 hours old • Clotted |
Reference Range(s)
| Male | Female | |
| ≤50 Years | ≤15 mm/h | ≤20 mm/h |
| >50 Years | ≤20 mm/h | ≤30 mm/h |
Reference ranges are provided as general guidance only. To interpret test results use the reference range in the laboratory report.
*The CPT codes provided are based on AMA guidance and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payer being billed.
This material contains content from LOINC® (http://loinc.org). The LOINC Table, LOINC Table Core are copyright © 1995-2019, Regenstrief Institute, Inc. and the Logical Observation Identifiers Names and Codes (LOINC) Committee and is available at no cost under the license at http://loinc.org/license.
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