When the creatinine level is lower in the urine test, it indicates people may have kidney problem. As the creatinine is mostly excreted by kidney function, and the damaged kidney function cannot excrete the creatinine out, which will cause the high creatinine level in blood and low creatinine level in urine.
Then, you will not damage anything if timing belt breaks. You simply need to pay for a new one to be put on. Also, the timing belt should last 105,000 miles.       Other symptoms may include engine vibration sometimes bad enough to set a knock sensor code.
A timing belt keeps your engine in sync by allowing the crankshaft and camshafts to fire perfectly on time. The valves and cylinder heads are located on the top section of the engine while the pistons are towards the bottom. Your timing belt will keep these two systems operating perfectly in harmony.