Pregnancy tests are as accurate as pregnancy tests because they are based on the same principle of detection, and they are used in much the same way, as they both detect the level of chorionic gonadotropin in the urine to know if you are pregnant. Therefore, fundamentally, there is no big difference between a pregnancy test and an early pregnancy test. It’s just that early pregnancy tests are not as convenient to use as pregnancy tests, and pregnancy tests are more expensive than early pregnancy tests. However, both are important measurement tools for detecting early pregnancy. Both the pregnancy test and the morning pregnancy test are very good at detecting pregnancy and have an accuracy rate of over 90%. To be more sure about pregnancy, it is best to have a blood test for chorionic gonadotropin levels at the hospital.