How long does a 70mg vyvanse stay in your system?

I take 120mg of vyvanse 3 or 4 times a week and I get randomly drug tested by my parents On a regular basis. Drink large amounts of orange juice because it contains citric acid and vitamin c which both help metabolize amphetamines up to 3x faster
I have passed a drug test the following night of taking vyvanse
THIS IS ONLY RELATIVE IF THE DRUG TEST YOU ARE TAKING IS A PANEL- URINE TEST
if it is a G/S drug test it can detect amphetamines in your urine that you forgot you ever took
If it is a hair follicle test I would give it at least 60 days
Good luck and take it later in the day if possible because the concentration of metabolites is lower as the day goes on