Any UK/European Endo's use saliva tests?

Does anyone know of any endo’s in UK or Europe who take saliva test into consideration. My experience of endo’s, urologists and the rest so far is that they take a blood test of your testosterone and judge everything to be OK from that. My saliva tests show otherwise.
So far I have seen Dr Minhas at University College Hospital London and he told me he dealt with erectile disfunction (not exactly my problem) but could not help with my problem of chronic muscle wasting to the body.