 The investigators will take three blood samples from them approximately 10mls of blood or 4 teaspoons full. One sample is to measure the levels of hepatitis C virus in the blood. This will tell us whether there has been reinfection with hepatitis C. The second sample is to measure the levels of inflammation within the liver and the third sample is to measure the full blood count. The investigators will then perform a liver scan called a fibroscan. This is a noninvasive test similar to an ultrasound that pregnant women have and gives a reading that can tell us about any stiffness in the liver. It takes approximately five to ten minutes to complete and involves the patient lying on their back with their right arm above their head for the duration of the scan. Following the scan the investigators will ask the participant to complete a short questionnaire. This will include questions about past and current drug use as well as any alcohol use. The answers will be kept strictly confidential. They will be stored in the researchers locked office and have no direct participant identifiers on them. They will simply have a study number on them.The participant will then be thanked for their time and offered 30 to cover all travel and time expenses for their visit. 