Are all hair tests the same??

I was recently hired by a company that does a pre-employment hair test. I was nervous as hell about it because it had been around 80-90 days since I smoked. So I went to a local lab and had them test me to see if I would pass. I did pass. The results I got were from Omega Labratories. The place were I was hired uses Psychemetics (sp??) to do their screenings. Since I passed the drug test from Omega Labs will I pass the one from Psychemedics? Do all the screening labs perform basically the same tests?? I am nervous as hail about this bc I really want this job:smokin::smokin: