Any question will be answered by the attending gynecologist ectopic pregnancy. If the girl has a clear delay, and on the test the control strip appears brighter than the indicator one, then there is every reason to suspect an ectopic pregnancy in the patient. This condition is very dangerous, so it needs mandatory treatment.
In vitro fertilization. With such a procedure, a girl, as a rule, is prescribed drugs of hormonal origin, which are quite capable of affecting the test results, and in the first gestational weeks on a positive test, one strip will be weak, which is quite normal.
Frozen pregnancy. With such a pathology, a characteristic drop in the level of hCG occurs, which appears on the test as a dull line. If, when tested at a weekly interval, the second line remains the same weak, then the suspicion of fetal fading is confirmed.
In any case, if the express test showed two lines, one of which is dimmer and more smeared than the other, then this result should be regarded as false, and after 2-3 days, re-test.