The problem of having the tests done privately is that you will pay for the consultation and each test. If then you are in the unfortunate position of getting a positive result you would then have to decide if you are going to continue paying for treatment privately or duck back into the NHS, who will then have to repeat the previous tests. One would then end up wasting both money and time in getting treatment. I’d say you would have to have a very good reason to test privately if you are not able to continue with private treatment.