ESR (Erythrocyte Sedimentation Rate)

NameErythrocyte Sedimentation Rate (ESR)
Tube TypeBlack top – BD Seditainer
Reporting Unitsmm/hr
Reference RangeMale < 12 mm/hrFemale <15 mm/hr
Analytical Range0 – 150 mm/hr
AvailabilityNDDH (24/7)
Target turnaround time2 hours
Special requirements & notesMust be delivered to lab within 4 hours of collection.
Only performed on patients with certain clinical indications.
Patient preparationN/A
Volume required5ml
If delayed transport to lab, store:N/A
Factors affecting result interpretationHaemolysed or contaminated samples should not be analysed.
High retic counts may lead to a fuzzy interface.
Results can be influenced by the haematocrit.
Elevated ESRs are common in pregnancy and do not indicate disease.
ESR is unreliable in patients over 70 yrs of age.
Time limit for add on testN/A
Pathology disciplineHaematology
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Last updated: May 27, 2020