Urine test at same Drug testing facility

[HelpMePlz]

Hi, I had a question about urine testing. Someone said that if I used someone elses clean urine for a drug test, then I would have to use the same person's urine if I have to get tested by the same drug testing company (Labcorp) because they have the previous urine in the system/file/watever. Is this true??

 

[Weed420]

No. They will keep the data on file but the samples are destroyed after a while. And the data doesn't tell them anything about genetics, just drug levels.