The following content is for reference only and does not constitute medical or legal advice. If you or someone else is facing a drug abuse problem, it is recommended to seek professional help as soon as possible. Regarding the time that methamphetamine (commonly known as ice) can be detected in urine, many factors need to be considered, such as the dose used, the frequency of taking, the individual's metabolic rate, weight, kidney function, fluid intake, etc. Generally speaking: 1. When used once or occasionally, most literature shows that methamphetamine and some of its metabolites can be detected in urine for about 1 to 4 days. Of course, some detection methods may be slightly more tolerant, and some users may still test positive after nearly 5 days. 2. For people who use frequently or take larger doses, the drug may accumulate to a certain extent in the body, and metabolism and clearance may be prolonged, sometimes up to a week or more. It should be reminded that due to large individual differences, the above time is only a general estimate and cannot be guaranteed to be completely applicable to specific cases. In addition, the sensitivity and detection methods of different urine tests on the market (such as detecting the parent substance or its metabolites) will also vary. Finally, from a health and legal perspective, the use of any illegal drug may bring risks. If you have any related questions or health concerns, it is recommended that you communicate with a professional doctor or consulting agency.