5354 Gulf Drive New Port Richey, FL 34652

Test Code


CTP Code(s)

Clinical Significance

Erythrocyte sedimentation rate also know as ESR or Sed-Rate is a test used to evaluate the nonspecific activity of infections, inflammatory states, plasma cell dyscrasias and, autoimmune disorders.

Test Resources

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Test Details


Erythrocyte Sedimentation Rate, Modified Westergren


Modified Westergren; automated

Reference Range(s)
  • Male: 0 to 50 years: 0−15 mm/hour, 50 years and older: 0−30 mm/hour
  • Female: 0 to 50 years: 0−32 mm/hour, 50 years and older: 0−40 mm/hour
Alternative Name(s)

Sed-Rate, Erythrocyte Sedimentation Rate, ESR, Westergren Sedimentation Rate

Performing Laboratory

Mainstream Diagnostic Laboratory, 5354 Gulf Dr., New Port Richey, FL 34652

LOINC codes


Preferred Specimen(s)

Whole blood

Alternative Specimen(s)


Minimum Volume

2 mL (Note: This volume does not allow for repeat testing.)

Collection Instructions

Invert tube immediately 8 to 10 times once tube is filled at time of collection.

Transport Container

Lavender-top (EDTA) tube

Transport Temperature


Specimen Stability

Refrigerated - 24 hours

Reject Criteria

Hemolysis; clotted specimen; underfilled tube; specimen older than 24 hours; improper labeling; transfer tubes with whole blood; specimen received in any anticoagulant other than EDTA; specimen diluted or contaminated with IV fluid; patient specimen with presence of cold agglutinins or cryoglobulins; specimen received with plasma removed.

Setup Schedule


Reference ranges serve as a general guideline. The laboratory report will contain the most current interpretaion.

AMA provides guidance for the refernced CPT codes. We provided them for informational purposes only. CPT coding is the sole responsibility of the billing party. If you have coding questions please refer to the payer being billed.

This material contains content from LOINC® ( The LOINC Table, LOINC Table Core are copyright © 1995-2019, Regenstrief Institute, Inc. and the Logical Observation Identifiers Names and Codes (LOINC) Committee and is available at no cost under the license at

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