10 days pregnant usually can not test out. Normally, if the menstrual cycle is regular, the delay of 10 days can be detected by the pregnancy test paper, and the blood test can also be detected. Each person’s menstrual cycle varies from person to person, some cycle is longer, may early pregnancy test paper test later, some cycle is shorter, early pregnancy test paper test will be earlier, the earliest coitus about 10 days after the blood test can be human chorionic gonadotropin, blood test is more accurate than the test paper test. Early pregnancy tests are not always accurate, as some can give false positives, and some can have some inaccuracies. However, the final determination of whether or not it is an early intrauterine pregnancy needs to be detected by vaginal ultrasound and abdominal ultrasound.