drug test for new job!?

i went to my friends party and she puts weed in the food she cooked. now i have weed in my system again, btw i did smoke weed, but stopped for 3wks. i didnt know my friend would be putting weed in her food. i had a drug test 2 days after, drank a detox herbal drink, the carbo one, and did a home test, which i passed. however, my pee is being sent to the lab! i heard lab tests are more strict and looks more into it. im so nervous, will i pass a lab test even when passing a home test? has anyone passed w a lab test while still having weed in their system?