Factual error: House is told Laura can't donate her heart because she has Hepatitis C. He declares that she doesn't have hep c, since it doesn't present with a fever and an upset stomach, which Laura had that morning. While hep C doesn't present that way, people with chronic hep C still get fevers and stomach problems like everyone else. Her fresh symptoms are completely irrelevant when it comes to whether or not she has hep C.