August 19, 2015

By Vannoy Law Firm



Usually mislabeled as a "lie detector test" (which probably should be known rather as "truth verification examination"), a polygraph examination is a test that has remained controversial since it's inception around the turn of the 20th century.  Generally, the polygraph uses blood pressure reading, skin conductivity (aka galvanic skin response), and heart rate to verify the veracity of the subject's responses to the questions posed to him by the polygrapher.  The qualifications of the polygrapher, the location, the time, date, physical condition of the subject, machine, and other factors, in my opinion cannot be understated.  Many potential clients have come to me asking my opinion on whether or not they should submit to polygraph testing which has been requested by law enforcement.  This is a loaded question for law enforcement to pose to the accused; fail the test, guilt is presumed, refuse the test, guilt is implied, pass the test, it is not admissible in court to dispute guilt. 

I utilize private polygraphers in some criminal cases.  The testing conducted at my direction is done under neutral circumstances.  My advice to those who are suspected of criminal activity or who are asked by law enforcement to submit to polygraph testing, is that you should probably consult an experienced lawyer before making such a decision. 

If you have questions about a search warrant, arrest warrant, or any other issue involving your personal rights and liberty, please feel free to contact my office.  If you have been charged with a DUI, traffic ticket, criminal offense, or a probation violation, feel free to contact me to discuss your options.  I also handle driver's license issues, parole cases, and other matters.  At my office, you will receive a free interview in criminal cases.  If retained, I will go about protecting your initial court appearance, if possible, and begin investigating the case.  If you have questions about a criminal or DUI case or questions about this article, feel free to contact me at (843) 761-0610.  If you would like to read more about South Carolina's DUI and criminal laws, copy/paste this link into your search heading

If you have questions regarding a DUI or criminal case in Berkeley, Charleston, or Dorchester County, please contact my office today at (843) 761-0610 or through the contact page on this website.

Photo-3Brady Vannoy is a criminal defense lawyer in Berkeley County, South Carolina.  He carries a Martindale-Hubbell AV Preeminent Rating.  According to the rating system, "AV Preeminent(r) is a significant rating accomplishment – a testament to the fact that a lawyer's peers rank him or her at the highest level of professional excellence."

Brady Vannoy is a member of The National Trial Lawyers, Top 100 Trial Lawyers in South Carolina.  You can find his profile at

Brady Vannoy's office is located in downtown Moncks Corner.  He regularly takes cases in Berkeley, Charleston, and Dorchester counties.  Brady is a member of the South Carolina Association of Criminal Defense Lawyers, The National Association of Criminal Defense Lawyers, and The National Trial Lawyers, Top 100.  Brady defends DUI and all types of criminal cases in Berkeley, Charleston, and Dorchester counties along with other areas of the South Carolina low country.  He can be reached at (843) 761-0610,, or through the contact page on this website.

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