MICHIGAN INNOVATIVE DIAGNOSTICS

Nonspecific marker of inflammation that measures how quickly red blood cells settle to the bottom of a tube over one hour, expressed in mm/hr. 

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LIS TEST CODE: ESR​

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CPT CODE: 85652

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ALIASES: ESR, Sed Rate

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METHODOLOGIES: Automated Westergren (Excyte Mini)​

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SPECIMEN:

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- Type: Whole Blood

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- Container: Lavender Top (K2/K3 EDTA) Vacutainer

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- Minimum Volume Required: 2 mL

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- Storage/Handling: Gently invert specimen 8 - 10 times immediately following blood collection to prevent clotting. Maintain specimen at room temperature or in the refrigerator until testing can be performed.

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- Stability:   

 

Room Temperature (20-25 °C): 8 hours

Refrigerated (2-8 °C): 1 days 

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- Turnaround Time: 24 hours from receipt.

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Special Instructions: N/A

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REJECTION REASONS: Clotted Specimen, QNS, Gross Hemolysis, Gross Lipemia, Contamination, Stability Violation, Expired Container, Incorrect Container

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REFERENCE RANGES:​

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Males (mm/hr)

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1-50 years of age: <= 15

>= 51 years of age: <= 30

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Females (mm/hr)

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1-50 year of age: <= 32

>= 51 years of age: <= 40

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