The first test with two bars and the second test without is usually a urine pregnancy test performed at home after menopause. The first test with two bars and the second test with one bar after two days, without two bars, may or may not be pregnant, it is recommended that the patient go to the hospital for examination. There are many reasons for the deviation of the test results, and the common reasons and solutions are as follows: 1. the patient may be pregnant: the second test result of one bar may appear false negative, and there are more reasons for this situation. 1. the specimen sampling is not standard: not in accordance with the standard requirements of the urine pregnancy test test, take the morning urine for testing, because the specimen sampling is not compliant, causing inconsistent results of the two pregnancy tests, can take the morning urine the next day 2, the quality of pregnancy test paper: the quality of early pregnancy test paper is not up to par or expired, resulting in inaccurate pregnancy test, in this case, you can replace the test paper and test again; 3, early pregnancy hormone levels are low: early pregnancy, hormone levels are low and not yet stable, there will also be inaccurate test results, generally in the 30-50 days of pregnancy can be detected 4. biochemical pregnancy: in biochemical pregnancy, the sperm and egg are combined and fertilized, but they do not settle in the uterine cavity, resulting in failure to develop further. In this case, the blood HCG will be elevated at the beginning, but soon the blood HCG will be lowered, resulting in deviations in the test results. At this time, you should go to the hospital in time to further clarify the diagnosis through ultrasound and blood HCG level; 5. Embryonic abortion: If the pregnancy is normal and the embryo stops developing afterwards, there is also a possibility that the HCG will be lowered, resulting in deviations in the test results. Second, the patient may not be pregnant: the two bars of the first test result may be false positive for a number of reasons. 1, incorrect testing method: resulting in the retention of urine specimens too high, more than the detection line, you can re-test; 2, the quality of the pregnancy test paper: due to the quality of the test paper itself, and false positive, you can try to change another brand of pregnancy test paper and test again; 3, drug factors. Before the test, taking drugs such as progesterone may also have a transient effect on the test results.