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Worcestershire Acute Hospitals NHS Trust
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Test
ASOT
CategoryMicrobiology - Virology
Code
ASOT
Pre-analytical
If there is a delay in transporting the specimen to the laboratory, please refrigerate.
Reference range
Range of assay (ASOT) <200 to 3600IU/ml 
Anti-streptolysin titre (ASOT) <200  Insignificant titre 
Anti-streptolysin titre   200  Equivocal result 
Anti-streptolysin titre   >200 Significant 
Range of assay (ASD) <100 to >1600IU/ml 
Antistreptodornase B (ASD) titres greater than 200 U/ml in adults and 300 U/ml in school age children are considered as significant.
Special requirements
N/A
Gold top tube
Minimum volume
1ml Adults 0.5ml paediatric samples
TAT Inpatient (urgent)
1 to 7 days
TAT Inpatient
1 to 7 days
TAT GP/Outpatient
1 to 7 days
Referral lab
Local
Page last updated: 08 September 2021