Normal testosterone levels in men vary between 8.8 - 36.7 nmol/l; and 5.2 mmol/ L would be below the normal range. This may require further evaluation to identify a primary cause and classify the cause of low testosterone i.e. local testicular or central/ pituitary causes. Management would largely be aimed at treatment of primary cause and normalisation of blood levels. I would suggest considering a detailed evaluation by a urologist and an endocrinologist for an accurate diagnosis and suggestion of an appropriate management plan.
Hope this is helpful.
Thank you for reply Dr..I've been back to my gp and she's wanting to do more bloods she also done a testicular exam and found that my left testicle was half the size of my right one,she's waiting for the new blood tests to come back then she's gonna organise appointment for urologist.I will keep you posted on what happens and thanks again for reply..regards iain..