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Test Code ESR Sedimentation Rate, Blood

Performing Laboratory

Bronson Laboratory Services-Hematology

Reference Values

mm/hr

Men

>50 years old

<20 mm/hr

 

<50 years old

<15 mm/hr

Women

>50 years old

<30 mm/hr

 

<50 years old

<20 mm/hr

Children

1-13 years old

3-13 mm/hr

 

0-1 year old

0-2 mm/hr

 

Methodology

Westergren

Specimen Requirements

Specimen  Stability:  room temperature = 4 hours 
                                    refrigerated = 24 hours

 

Specimen Type: Whole blood

Container/Tube: Lavender top (EDTA)

Specimen Volume: 3 mL

Specimen Minimum Volume:  0.5 mL in standard 13x75 lav tube or 350 uL in EDTA MAP tube

Collection Instructions:

1. Gently invert 5 to 10 times to mix blood.

2. Causes for rejection include clotted specimen and specimen too old.

3.  Do not centrifuge sample.

Specimen Transport Temperature

Refrigerate

Day(s) Test Set Up

Monday through Sunday

Test Classification and CPT Coding

85651