Filaria Serology

This test is referred to another lab outside our network
This does not affect where samples are sent and where your results are issued.
Sample sent to Hospital for Tropical Diseases (PHE National Parasitology Reference Lab) referral laboratory for Filaria serology testing using an ELISA. A negative result does not exclude the diagnosis. This test will not detect infection with onchocerciasis which is diagnosed by demonstration of microfilariae in skin snips. A blood film to detect the microfilaria may be required if serology is positive. This needs to be taken at a particular time - please contact the laboratory for further details. This assay is available routinely Mon to Fri.
Clinical details: 
Filariasis only occurs in tropical regions. Filaria worms are transmitted by mosquitoes. Acute infection may be sub-clinical, or result in lymphangitis, rash, or eosinophilia. Lymphoedema can occur in patients with a high worm burden, which only occurs in those with a repeated filaria exposure living in an endemic country.
Synonyms or keywords: 
Wuchereria bancrofti, Brugia malayi, and Brugia timori, Loa loa, Onchocerciasis
Sample type and Volume required: 
2.5 – 5ml Yellow Top Serum Separation Tube (SST) Clotted Blood (for serum).
Turnaround time: 
14 working days
Storage and transport: 
Place labelled sample in a sealed sample bag and send to Central Specimen Reception (CSR). To prevent sample haemolysis please store samples in refrigerator if a delay in sending samples to CSR is unavoidable.
Infection Sciences Department at St Thomas' Hospital
020 7188 8008
St Thomas' Hospital
North Wing - 5th Floor
Westminster Bridge Road
London SE1 7EH
Core opening hours: Monday-Friday 0900-1730

For clinical advice or interpretation of results, please contact the laboratory in the first instance.

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Last updated: 04/12/2017