Early pregnancy test strips on the same day usually test strip color change is not big, the color of the test strip shades with the amount of urine, the degree of concentration. Early pregnancy test strips that is human chorionic gonadotropin test strips, is through the urine specimen of human chorionic gonadotropin and test strips in the test reagent to form a color band, such as two bars, is positive, pregnant, such as a color band, is negative, not pregnant, urine specimen in the human chorionic gonadotropin concentration is higher, the deeper the color band. The use of test strips on the same day usually do not change much in color, such as early pregnancy test strips measured at noon slightly darker than in the morning, may be related to the degree of concentration of urine, urine volume is small. Early pregnancy test strips are a simple, convenient and reliable means for women to determine whether they are pregnant or not, when there is a delay in menstruation, suspected early pregnancy, early pregnancy test strips can be used to detect, but because of the early pregnancy test strips have a false-positive and false-negative rate, when suspected of being pregnant, it should also be timely to the hospital for a confirmation of the diagnosis.