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| 21050:ERYTHROCYTE SEDIMENTATION RATE, WESTERGREN | |||||||||
| Alias Names: | ESR / SED Rate | ||||||||
| Methodology: | Automated Photo-Optical measurement of red cell sedimentation rate | ||||||||
| Edit Date: | 10/1/2010 | ||||||||
| Performed: | Daily | ||||||||
| Released: | Same day as tested | ||||||||
| CPT Code: | 85652 | ||||||||
| Specimen Collection Details | |||||||||
| Collection: | One 4 mL lavender top tube (EDTA). Fill tube at least 1/3 full. | ||||||||
| Handling: | Refrigerate. Send to the laboratory same day. | ||||||||
| Stability: | Specimen may be tested up to 24 hours after collection if refrigerated. A small percentage (<5%) of abnormal specimens tested 16 hours or more after collection will correct to within the normal range, according to PeaceHealth Laboratories' stability studies. Ambient specimen stable 4 hours. |
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| Standard Volume: | 4 mL EDTA whole blood. | ||||||||
| Minimum Volume: | 1 mL EDTA whole blood. | ||||||||
| Transport: | Refrigerated. | ||||||||
| Rejection Criteria: | Specimen age; clotted or frozen specimen; marked hemolysis. | ||||||||
| Age | Gender | Reference Range | |||||||||||||||||
| 0-49 years | Male | 0-15 | |||||||||||||||||
| Female | 0-20 | ||||||||||||||||||
| ≥ 50 years | Male | 0-20 | |||||||||||||||||
| Female | 0-25 | ||||||||||||||||||