Methamphetamine (CDMA) typically shows up in urine within 2-4 days of use, but this can vary based on individual factors, dosage, and detection methods. The following is a general guide to when methamphetamine can typically be detected in urine: * High-dose use (over 100 mg): 3-5 days * Moderate-dose use (20-100 mg): 2-4 days * Low-dose use (less than 20 mg): 1-3 days Please note that these time frames are approximate and may vary based on the following factors: 1. Individual metabolism: People with faster metabolic rates may eliminate methamphetamine more quickly. 2. Frequency and frequency of use: Frequent use of methamphetamine may result in longer detection times. 3. Weight and body composition: Weight, body composition, and body size can all affect how quickly methamphetamine is absorbed and excreted from the body. 4. Test sensitivity: The sensitivity of different urine tests can vary, which can affect detection times. 5. Individual tolerance: Those who have a tolerance to methamphetamine may eliminate it more quickly. Common urine tests for drugs, also known as routine drugs of abuse tests, are usually done using either an immunoassay (IA) or enzyme immunoassay (EIA) test. These tests are designed to detect methamphetamine and its metabolites. If you are considering a urine test for someone, or want to know how long you will have to wait before you pass a test, keep in mind the following: * Most standard Schedule 5 drug of abuse tests will only detect methamphetamine use within the past 2-4 days. * More advanced tests, such as gas chromatography-mass spectrometry (GC-MS), may be able to detect use over a longer period of time (up to 7-10 days). * Detoxification rates can vary greatly based on the factors listed above. Remember that this information is for reference only, and if you have specific questions or concerns, consult a medical professional or qualified toxicologist.