When using a pregnancy test strip, if one line is dark and the other is light, how should you respond?

Patient's question:

No

Doctor's answer:

After a week of delayed menstruation, you can use a pregnancy test strip to check. If two red lines appear on the test paper, it indicates a positive result, meaning pregnancy; alternatively, you can go to the hospital to have a blood test to measure human chorionic gonadotropin (hCG) for a definitive confirmation of pregnancy.