What does the pregnancy test stick mean by the red line in area C and the white line in area T?

Hello, this means that you are not pregnant. Rapid pregnancy test box, 1, positive: a purple line appears in the control area (c) and the detection area (t) respectively, indicating pregnancy. 2. Negative: There is only one purple-red line in the control area (c), indicating that there is no pregnancy. 3. Invalid: There is no purple line in the control area (C), which indicates that the test failed or was invalid and needs to be re-tested.