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HelpEpic Test Code LAB547 Erythrocyte Sedimentation Rate - Manual Method
Performing Location(s)
BMC,LFH,OCH,FTT,FOX,CRH
Synonyms
Sed Rate
Specimen Type
Whole Blood
Preferred Container
Lavender Top
Blood Tube Draw Volume
Min 50% draw volume
Minumum Volume to Submit for Testing
3.0 mL Whole Blood
- Multiple test can be performed from this volume. For question please contact the lab at 547-3975.
Storage Requirements
Refrigerate up to 12 hours
Transportation Needs
Deliver to the laboratory within 12 hours
Causes for Rejection
Mislabeled or unlabeled specimen
Less than 50% draw for Vacutainer tubes
Clotted specimens
> 12 hours old
Limitations
Assay requires a one hour sedimentation process
The ESR is subject to many interferences. It is affected by a high WBC count, increased fibrinogen, abnormal RBC’s, variances in room temperature, transport time, and certain drugs. With the exception its use as a monitor for certain rheumatologic conditions, a C-reactive protein test (CRP) may be considered a replacement for the ESR
Specimen must be tested within 12 hours of collection. Add-on requests for specimens older than 12 hours will not be performed. It is suggested that the clinician consider ordering a C-reactive protein test
Reference Values
| Population | Units | Reference Range |
| Male ≤ 50 years old | mm/hr |
≤ 15 |
| Female ≤ 50 years old | mm/hr | ≤ 20 |
| Male > 50 years old | mm/hr |
≤ 20 |
| Female > 50 years old | mm/hr | ≤ 30 |
Days of Analysis
All
Available STAT
No
Additional Information
DO NOT FREEZE
This test is NO LONGER offered on a STAT basis. It is suggested that clinicians order the C-reactive protein test.
Methodology
Manual
CPT Code
85651
Last Updated
29-Apr-20