Incorrect use of a pregnancy test:
• expired;
• damaged pregnancy test packaging - the reagent dissipates over time;
• storage conditions are violated: it is recommended to buy tests in a pharmacy, not in a supermarket;
• using a non-sterile jar to collect urine;
• too much liquid has gotten on the strip: do not immerse the test in urine below the mark specified by the manufacturer;
• carrying out the analysis in the daytime and in the evening: it is preferable to perform the test in the morning to collect the most concentrated portion of urine;
• when assessing the result earlier or later than the specified time: often, after the cherished minutes indicated on the package, the evaporation of moisture from the dough leads to the appearance of spots and a weak line.