My 19 year old son was injured in the kidney area about a week ago jumping off a bridge xrays show no broken bones or anything else but did show kidney stones present. he is now complaining about his urine being gray in color. could kidney stones cause the discoloration?
HAI, kidney stone cause discoloration of urine.  Deposition of crystals of calcium, phosphate,oxalate, urate possibly causing the kidney stone. Debris and dissolving particles from kidney stone will cause gray color urine. Bleeding in the urinary tract because of irritation by the kidney stone in the inner wall cause urine discoloration (gray).thank you hope I answered your query