Broken chain of command

In the last 15 years, I have never failed a drug test, In November I took a random DOT, drug test, it came back positive, the paper work from the testing facility Had the collection site in South Carolina, The test WAS done in Florida, They tested some one else's urine? HOW DO I GET THIS REMOVED FROM MY RECORD?Acording to the regulations the chain of command was compromised WHICH means the test is not valid.so how can I get this right?

 

negative, on all of my records of drug test THE COLLECTION SITE is clearly labeled and correct on ALL of the previous test, NOT on this one, THIS test shows COLLETED in S.C . NOT where it was really, collected know your trying to be helpful But I can read, and have done research ,I have also talked to my SAP, therapist, Whom I met as part of my back to duty program, he, also informed me that the test is not valid;

 

First off ,,THANKS TO ALL THE HANDS THAT HELPED, it is appreciated ,,there really isn't a safety DEPT. per say, just the owners wife, she's the one that fired me or told me that she could not put me back to work, I have called a lawyer 3 so far, only found one. Maybe,There isn't enough money in it to help me,MAGGOTS,,any way I will call the FMCSA ,,and try that, When I told the MRO that I wanted another test, I was told that I would have to pay 300 dollars, At that time didn't have the extra cash, hindsight, should of payed it ...I thought it was given free like the first one,,,THANKS again

 

ok ..update, I've completed the back to work process, cost was about a grand, the only reason I went through this, nonsense is my employer said if I did, . They would put me back to work, well they didn't there insurance said they couldn't, put me back to work,YEP insurance companies run this country,