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Test Code ESR or LAB322 Sedimentation Rate (ESR), Automated, Blood

Important Note

Specimens drawn in EDTA microtainers will be rejected. Please reference the Specimen Requirements section for acceptable EDTA container types.

Specimen Requirements

Container Type:

Optimal: EDTA Lavender Top (13x75mm), whole blood

 

 

 

Acceptable: EDTA Lavender MAP tube 

 

Unacceptable: EDTA microtainer

Optimal Collection Volume:

Full tube

Minimum Volume:
  • 13x75 mm tube: 0.5 mL whole blood
  • EDTA MAP tube: 0.35 mL whole blood

Collection Instructions:

Gently invert the sample tube 5-6 times after collection to mix the blood.

Processing Instructions:

1. Keep the specimen as whole blood for testing.

2. Store the specimens refrigerated prior to testing.

3. Allow refrigerated samples to come to room temperature and mix well before analysis.

Specimen Stability

Specimen Type

Temperature

Time

Whole blood

Room temperature

 4 hours
Refrigerated

24 hours

Specimen Rejection Criteria

  • Clotted
  • Hemolyzed
  • QNS
  • Specimens drawn in microtainer tube

Useful For

Helpful in revealing inflammatory activity and in monitoring the progress of conditions associated with acute and chronic inflammation, including:

  • infections
  • cancers
  • autoimmune diseases

Methodology

iSED - quantitative capillary photometry

Reference Ranges

Males

Age (years) Reference range (mm/h)
≥ 50 < 20
< 50 < 15

Females

Age (years) Reference range (mm/h)
≥ 50 < 30
< 50 < 20

Children

Age (years) Reference range (mm/h)
1-13 3-13
0-1 0-2

Day(s) Performed

24/7

Expected TAT

Same day

Performing Laboratory

Bronson Laboratory, Hematology - Kalamazoo, Battle Creek, Paw Paw, South Haven

Sample Retention Time

7 days

CPT Code

85652

LOINC Code

82477-1