The body quickly absorbs and metabolizes codeine narcotics. So for most standard blood or urine screens, codeine will be detectable for 1-2 days. However, codeine is detectable in hair for longer periods of time. More here on the length of time codeine stays in your system, plus how you can get addicted to codeine.
Quick Answer. There are a number of reasons why a toilet may make noise after flushing; however, a loud noise that takes more than a minute after flushing the toilet may indicate a restricted water flow or a problem with water pressure. In such a case, the pressure valve should be adjusted while the toilet is making the noise.
You may hear a whistling sound -- the telltale symptom of a worn gasket or washer. Rattles from the pipes behind the shower, on the other hand, usually indicate pipes that haven't been properly clamped to the framing. A loud knock when you turn on the valve is a symptom of water hammer, which is caused by excessive pressure in the pipes. You can quiet some noises by servicing the valve, but to dampen others, you may need access to the pipes.