halcyon
Senior Member
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Yeah it definitely isn't. If I understand the CF test methodology correctly, it will only ever be positive if there is a significant amount of virus in the blood at the time of the blood draw because it's measuring complement bound to antibody-antigen complexes.There is no mention on the Enterovirus Foundation website that complement fixation is suitable for testing the chronic enterovirus infections in ME/CFS patients.
The LabCorp coxsackie A test is an IFA antibody test so the interpretation is different from the other testing methodologies. Her results probably just show good immunity to past coxsackie A infections. We'd have to see the interpretation information for LabCorp's coxsackie B assay to tell if her results are significant or not.And especially surprised to see lots of high coxsackievirus A titers.
Cambridge Biomedical only offers the echovirus panel, testing for the same 5 serotypes as ARUP, whereas ARUP has both coxsackie B and echovirus panels. The Cambridge Biomedical test is a microneutralization assay, same as ARUP. Sorry I'm not sure what the price is.I did not know Dr Chia also uses Cambridge Biomedical for enterovirus testing. Do they perform the same type of enterovirus tests as ARUP Lab? And are they any cheaper, would you know? I would like to take the ARUP tests for coxsackievirus B and echovirus, but at $500 each, that is a little bit too much money to pay out of pocket, especially as the results will not be of any particular help to me.