How reliable is DNA analysis?

It is highly reliable, highly sensitive, and highly specific which is why there is such a high demand for its use.  The procedures used in Hamilton County are the same as those used throughout the world.  In fact, the Hamilton County Coroner’s Crime Lab DNA Section is inspected every other year by an outside agency to insure it meets national standards.  The entire lab is inspected every 5 years to insure it meets international standards.  Throughout the year the lab must meet stiff standards required by the FBI DNA Quality Assurance Standards and the American Society of Crime Lab Directors Laboratory Accreditation Board International.  This insures the results are accurate and can be trusted by the courts.