The honest reply is I don't know. With 30 days clean you may be OK but it depends on your height, weight, metabolism, active lifestyle vs. sedentary, diet and smoking history. How much and how often did you smoke before your last smoke? If you have time take a home test that you can buy at any pharmacy. If you pass dillute with 40 oz of gatorade prior to your ua. If you do not you can try to sub with synthetic urine or follow the dillution sticky exactly except sub gatorade for water and skip the aspirin, it doesn't help anymore.