Microscopic polyangiitis

[Brynithel3]

Microscopic polyangiitis. Has anyone had an Elisa test? What units are they in and what is considered a normal range?

[helixhelix]

It isn’t available in the UK on the NHS for diagnosing RA, so you might get more answers on a US forum.

[Brynithel3 in reply to helixhelix]

I wonder why not? Have you ever requested one? Apparently it measures the activity of the anca.

[helixhelix in reply to Brynithel3]

It is used for certain things here, but rarely as a diagnostic or predictive tool when RA is suspected. My guess is because the cost-benefits aren’t positive. And anca vasculitis is not a common feature in people with RA.

Try on the polymyalgia forum perhaps, as might be used more for GCA vasculitis. Or on lupus one.

[Brynithel3 in reply to helixhelix]

Hi Just spoken to my doctor to review my latest blood results. I asked about the elisa test and he look through my results and said they weren't recorded on my Patient view page. ( A very useful tool) But I have had two Elisa results the first when I was diagnosed in August was 180+ units per volume ( I think it was x ml) The second (in December) 3 months after my rituximab infusion was less than 3 (Classed as undetectable.) He said they will only carry out another test if my condition starts to deteriorate.