Can you flush weed out of your system how and how long?

No: Thc is stored in the fat and can't be flushed out.

Vinegar doesn't work: and nothing else does either, at least nothing else that won't be detected by the current testing methods used. Water loading will reduce the creatinine and specific gravity of urine- that is detectable. Use of acidic substances (which actually makes almost no difference anyway) will alter the urine pH and that will be detected, and other cleansing agents don't work. STOP SMOKING POT - that works.

Gradually leaves: The drug attaches to your cells and gradually leaves over time.If you are a light user it should be gone in a week.In heavy users it can take a month.There is no dependable way to "flush" it.