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.
Many people are confused bya timing belt. Not every engine has one, but those that do require replacement at a specific mileage or time interval. Timing belts offer a number of advantages, such as light weight and precise timing over their lives. The timing belt is also far less affected by lubrication problems than a chain or gear drive.