The LabCorp office on Hembree Rd has a sign in folder stating you need an ID, an insurance card and a CREDIT CARD. The clerk at the desk said they file insurance and charge your credit card. After insurance pays they charge any balance to your card and destroy the credit card info. She said all Labcorp offices require a credit card. This is not so. I went to a different Labcorp office where they did not want my credit card .