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Children's Medical Center · Clinical Laboratory |
Sedimentation Rate |
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Children's Medical Center · Clinical Laboratory |
Sedimentation Rate |
| Alternate Name: | ESR; SED Rate; Erythrocyte Sedimentation Rate; Sedimentation Rate |
| Includes: | N/A |
| Method: | Modified Westergren |
| Department: | Hematology |
| Phone: | (937) 641-3430 |
| SunQuest Code: | SED |
| Availability: | Daily,24 hours |
| Turnaround Time: | Routine: 2 hours, STAT 60 minutes |
| Specimen: | Blood |
| Volume: | 1 mL |
| Container: | 3 mL lavender top tube or lavender top microtainer (EDTA) |
| Temperature: | Deliver to laboratory immediately following collection. |
| Rejection: | Clotted or diluted specimen. Specimen over 3.0 hours old. |
| Normal Values: | Males 11-50 yrs. <= 15 mm/hr >50 yrs. <= 20 mm/hr Females 11-50 yrs. <= 20 mm/hr >50 yrs. <= 30 mm/hr Neonates 0-28 days 0-2 mm/hr Children 29 days to 11 yrs. 0-13 mm/hr |
| Uses: | Rate of sedimentation of erythrocytes is an indirect means of quantitating rouleaux formation, plasma concentrations of fibrinogen, immunoglobulins and acute phase reaction proteins, and the shape of the red blood cells all effect the ESR. |
| Limitations: | Hemolysis may modify sedimentation, anemia, polycythemia, hemoglobinopathy, and paraproteinemia invalidate the results. |