A person whose DNA profile has been included in the data bank pursuant to this article may request that it be expunged on the grounds that the conviction on which the authority for including his or her DNA profile was based has been reversed and the case dismissed. The bureau shall purge all records and identifiable information in the data bank pertaining to the person and destroy all samples from the person upon receipt of a written request that such data be expunged, pursuant to this Code section, and a certified copy of the court order reversing and dismissing the conviction.