|Name||Erythrocyte Sedimentation Rate (ESR)|
|Tube Type||Black top – BD Seditainer|
|Reference Range||Male < 12 mm/hr||Female <15 mm/hr|
|Analytical Range||0 – 150 mm/hr|
|Target turnaround time||2 hours|
|Special requirements & notes||Must be delivered to lab within 4 hours of collection.|
Only performed on patients with certain clinical indications.
|If delayed transport to lab, store:||N/A|
|Factors affecting result interpretation||Haemolysed 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 test||N/A|
|‘Lab Tests Online’ link||https://labtestsonline.org.uk/tests/erythrocyte-sedimentation-rate-esr|
Last updated: May 27, 2020