Does a company sending you to take a drug test usually mean you have the job?

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Does a company sending you to take a drug test usually mean you have the job? I am talking about U.S. Steel, several thousand employees, they have already done the background screening, employment history, everything including the interview, they didnt say you will be hired they just gave me a paper and told me to go get the test, they do the hair test and the pee test, also how much do those test cost?