Hello and Welcome to ‘Ask A Doctor’ service. I have reviewed your query and here is my advice. As per your query you had marijuana two weeks ago, well detection of marijuana depends on many factors such as drug potency, tolerance, method and frequency of marijuana use and body metabolism. As for being detectable in a drug test, well this depends on the type of drug test. Urine test will detect up to a month prior but a blood test will show positive you had marijuana in the last 6 months. Marijuana usually detected in urine up to 48 to 72 hours. If you have not taken it since 1 week then it is less likely that it will detect in body. Marijuana metabolites are stored in fat tissue so those users who are overweight will probably take longer to clear the drug. So you need not to worry about anything. Your test will be okay. Hope I have answered your query. Let me know if I can assist you further.