ADA for TB (adenosine deaminase)

Enzyme assays
This test is not currently included in the laboratory's UKAS scope of accreditation to ISO15189:2012.
Clinical details: 
ADA is raised in pleural/ascitic fluids/ CSF of patients with TB
Reference range: 

<35- IU/L <6-IU/L/ CSF

Sample type and Volume required: 
Fluid samples for ADA analysis MUST be packed in individual plastic bags. The request form should be accessible in the side pocket as the plastic bag containing the sample can only be opened in a CL3 laboratory. If multiple samples are received in the same bag, it is possible that none of the samples can be analysed.
Fluid samples received are filtered to be microbiologically safe.
Pleural and ascitic fluid: 2 - 5 mL required
CSF: 1 mL required
Turnaround time: 
1 week
Storage and transport: 
Stable at 4oC or frozen for at least 4 weeks. Send at room temperature by first class post.
Purine Research Laboratory at St Thomas'
020 7188 1266
St Thomas’ Hospital
North Wing - 4th Floor
Westminster Bridge Road
London SE1 7EH
For clinical advice or interpretation of results, please contact the laboratory in the first instance.

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Last updated: 23/10/2023