Pre-employment drug screenings and my rights

Do I have the right to refuse a drug screening? What is the chance to get a new job if I refuse to do it ?? Thanks

Pre-employment drug screenings can be given to any prospective job applicant only after an offer of employment has been made. You do have a right to refuse to take the test, but you will probably not get the job. Please be aware that this differs from a random drug screening that is given after you are hired. An employer has the right to give a drug test that is not announced on a routine basis, or if there is suspicion of drug or alcohol abuse on the job. If you refuse to take these tests, you may be terminated from the job. Most employers use independent laboratories to conduct a drug screen. They will in turn give the results of the test to your employer.