Erythrocyte Sedimentation Rate

Alternative Names/Synonyms	ESR
Laboratory	Core Laboratory & Transfusion Medicine
Sub-section	Hematology
Specimen Type	Blood
Test Code	ESR

Ordering Instructions, Requisition

Hematopathology Requisition
(MS 333A)

Clinical Significance

The Erythrocyte Sedimentation Rate (ESR) is widely used as a screening or monitoring test for patient with acute or chronic inflammatory disease

Specimen Requirements (Sample Type)

Whole Blood (EDTA)

Specimen Requirements (Volume (mL))

1 - 4 mL, test can be done on CBC tube, no extra tube is required if the CBC is ordered at the same time

Specimen Requirements (Tube Type)

Lavender whole blood tube with EDTA Collection Containers – Tube Types

Draw (mL)

4 mL

Collection Requirements

Blood Collection Instructions

Sample Stability

Room Temperature: N/A

Fridge: N/A

Freezer: N/A

Sample should be run within 12 hours from venipuncture.

Samples are stable for 24 hours if kept in fridge (2-8 C).

Cause for Rejection

Specimen Acceptability and Transport Guidance

Instrument, Methodology

Automated ESR Instrument

Test Availability

24 hours, 7 days/week.

STAT Turnaround Time

2 hours

Routine Turnaround Time

6 hours

Reference Ranges

Male: 2-20 mm/h
Female: 2-24 mm/h In case of discrepancies, always interpret results using reference ranges as stated on laboratory reports and/or electronic patient chart.

Laboratory Contact Information

416-586-4800 Extension 4688