I took the LAPD polygraph recently and failed. After going through the test questions three times I patiently waited for a very long time. I was only not completely truthful regarding my past drug usage. Most of the questions asked other than my drug usage were very serious, and I certainly was inoocent. Subjects regarding betraying trust, committing serious crimes, stealing, and some others I can't remember. I did admit to them beforehand that I had used marijuana in the past.  After the test the exminer came back into the room and got me to admit that I had not been completley truthful. He tried to acuse me of selling and buying, and also tried to get me to admit using other dugs like cocaine. I also was questined about physical abuse during domestic disputes which was totally off the wall. 
The examiner fooled me. He made me believe that he thought I was a good candidate for the police department, and that I just needed to come lean on this, I did fall for the trick that he played on me as he told me that if I wrote down the most accurate details of my drug use and  explanation, that he could get me a retest.  He insisted on dterming an exact number of times I usmoked to the point he made me do the arithmetic. It was so terrible. I was an emotional and nervous wreck at that point. I wanted to cooperate to prove that I really have nothing to hide except that when I was in high school (almost ten years ago), I made mistakes.  I really think that I would make a good police officer now. After I left that I realized maybe if I would have not given up any more information and continued to standby what I had already given up, or just simply got up and left, then maybe I would not feel so guilty. When he told me to reead aloud what I had wtiiten, I knew that my fate was sealed. 
Maybe someone can answer this questioin for me: Am I going to have a chance ever again? I am not interested in working for LAPD anyway, but I'm concerned if I will have this experience used against me in other department interviews. Any advice? It would be greatly appreciated.