question: Hi I was involved in a RTA 3 yrs ago when a 44 ton lorry hit me.  I have had back problems ever since and currently receiving more physio, particularly on my left side.  Recently after a 2nd blood test, my GP has informed me that I am in stage 3 CKD.  I have no other explanation for this, i.e. low cholesterol, low BP, I'm 42 and healthy.  I also had a scan of my kidneys, liver and gallbladder in Jan 2011 approx 7 mths after my accident and was found to have gallstones.  She told me at the time of the scan, that I had scar tissue on my left kidney and that it looked to be recent, she also asked if I'd had any type of infection, of which no, I had not.  I never thought to mention my car accident 7 months earlier.  My question is, is there a possibility that the damage I have was as a result of the car accident? How would I go about finding this out for definite, would my GP need to refer me to a nephrologist?  Thank you in advance.