Sedimentation Rate, Modified Westergren

CPT Code(s):

  • 85651

Preferred Specimen:

Whole blood: Full EDTA (lavender-top) tube

Minimum Volume:

2 mL

Special Instructions:

Invert tube immediately 8 to 10 times once tube is filled at time of collection. Maintain specimen at room temperature. If multiple tests are ordered, please submit a separate tube for this test.

Transport Container:

EDTA (lavender-top) tube

Transport Temperature Name:

Room temperature

Specimen Stability Components:

  • Room Temperature: 24 hours
  • Refrigerated: 24 hours

Testing Schedule:

Daily

Methodology:

Modified Westergren, Manual method

Reference Range:

Men < 50 years old: 0-15 mm/hourMen >50 years old: 0-20 mm/hourWomen < 50 years old: 0-20 mm/hourWomen > 50 years old: 0-30 mm/hour

Reject Criteria:

Hemolysis, Samples >24 hours old, Clotted, Insufficient quantity

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