According to experts, codeine remains present in the urine for two to four days after ingestion. While in the body, the drug codeine converts to morphine as it is metabolized. Therefore, any drug test given while codeine remains in the body will produce a positive result for morphine, which is also a component in powerful street and outlawed street drugs, such as heroin. For this reason, it's very important to avoid codeine for a week or more if you're taking a scheduled drug test. If you have a valid prescription for codeine, you should let your company or drug testing firm know this by bringing the prescription along with you when you take the test. While this may not exclude you from the negative repercussions of testing positive for morphine, it will provide extra evidence that you are not abusing heroin or other drugs that register a positive morphine result. Unfortunately, most modern urine drug tests are not sensitive enough to detect exactly which drug you took (or if you took just one) when you are tested; therefore, it is impossible for testers to know whether or not you abused street drugs, as well as codeine. This can make it difficult to explain yourself if you do test positive. In the eyes of drug testers, you may have been abusing a range of drugs containing morphine.
The only tests that detect the presence of specific drugs that show as morphine are hair tests; hair is used to find the presence of recent drug use, within a three-month period. However, cutting your hair very short, or getting a "buzz cut", can be an excellent way to avoid this sort of intrusive drug testing. As far as urine tests go, it's really difficult to elude detection when you follow the rules of the test - often, these tests are tightly controlled to avoid replacement of the person's urine with someone else's "drug-free" urine. Thought these tests have been foiled through various tricks and methods, it's always a good idea to avoid codeine and all other drugs that will produce a positive result that stays on your permanent record.
The only tests that detect the presence of specific drugs that show as morphine are hair tests; hair is used to find the presence of recent drug use, within a three-month period. However, cutting your hair very short, or getting a "buzz cut", can be an excellent way to avoid this sort of intrusive drug testing. As far as urine tests go, it's really difficult to elude detection when you follow the rules of the test - often, these tests are tightly controlled to avoid replacement of the person's urine with someone else's "drug-free" urine. Thought these tests have been foiled through various tricks and methods, it's always a good idea to avoid codeine and all other drugs that will produce a positive result that stays on your permanent record.
