Can a polygraph be threatened by law enforcement when no crime has been committed??

First of all my answer does not establish an attorney/client relationship, and I do not solicit clients.  I am a lawyer  and board certified internist who practices both law and medicine in S.C.  Anything can be threatened by anyone, but you do not have to agree to take the polygraph.  Your information given is somewhat limited.  Why would a police officer threaten you with a polygraph if no crime has been committed.  I will assume that a crime has been committed, and you are a suspect.  The police could ask you to take a polygraph, but they could not threaten you with taking one.  Assuming they did, I would hire a criminal lawyer (I do practice criminal law), and let him or her do your talking for you.  No one can be forced to take a polygraph, and a polygraph is not admissable in court as evidence in S.C..  Do not take one, but hire a lawyer to protect your  legal rights.   Michael G. Sribnick, M.D., J.D.  Attorney at Law Michael G. Sribnick, M.D., J.D., LLC www.michaelsribnicklaw.com