I am glad that I found this post. Yesterday I received a cover letter for an outstanding bill from December 2012 in the amount of $100.29 for a PreDx test, out of network, that I was not aware I even had done. The letter stated that due to an audit, it was revealed they had previously missed sending me a bill, and went on in the attempt to shame me into paying it, stating the vast majority of Florida residents that were affected by their late billing error have responded positively and have reimbursed Tethys for the amounts due. The letter is signed by Demetria Wyatt, Chief Financial Officer, on scanned letterhead. The invoice goes on to request my credit card information. I am definitely not paying anything to whomever these individuals are, contacting my doctors office and reporting them to the State of Florida for the unethical and apparently fraudulent request.