I know of only one private blood test service in London, which is TheDoctor Ltd. I don’t think that they do LDL particle size & number, but it’s worth contacting them in case they know someone who does.
I would imagine that there would be a private clinic on Harley Street that does this. Are you not able to have this done through your GP/NHS though?
However, saying that, my GPs surgery only test total cholesterol, HDL & LDL - they don't even test or workout trigs (and that's a diabetic lipid panel!).
Sorry, I can't vouch for anything personally though. I'd also be interested if anyone else has suggestions or recommendations (however, I'm in the North East).
Ratio of TG and HDL is a VERY good predictor of LDL particle size, so you can probably skip it anyway.
There are several methods and their results vary widely, so even if you get it tested, you can't be really sure anyway.
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