Yes. If you are stressed out or maybe if you're on sort of medication, the lie detector may pick that up, even though you're telling the whole truth.
Can You Fail A Lie Detector Test If Your Telling The Truth?
Actually yes you can. As a criminal justice major. You can fail them easy they pick up the stress levels and hesitation between the questions.
Don't think so... Strangely I passed the lie detector test three times in three different places by lying all the times... I am either a pretty good lier or all the machines were bad... So now I m not so sure... But I think if you truly are telling the truth then there shouldn't be a problem - you will most likely pass!!!