The reason for this is the fact that the actual pregnancy test paper will not affect the positive results, because the progesterone belongs to the progesterone, and the early pregnancy test paper detects the HCG concentration in the urine, so it is a completely different matter, the progesterone will not affect the results of the pregnancy test paper. It is also recommended that when checking for early pregnancy: 1, pay attention to the best in the thirty-five days after the menopause and then test, this time the positive rate may be higher. 2, it is best to use the morning urine test. 3, in the urine specimen before two hours do not drink too much water, so as not to cause dilution of the urine, and false negative results. 4, it is also recommended that in the use of early pregnancy test paper test, we must look at the package is not damaged, whether or not Contamination by other chemical stains can also affect the test results.