Taking a home pregnancy test involves precise steps to ensure the accuracy of the result. The integrity of the testing device is important for the chemical reaction that detects the presence of human chorionic gonadotropin (hCG) hormone. Understanding the correct procedure immediately following urine application prevents common errors that lead to confusing or unreliable outcomes.
Recapping the Test Swab
You should replace the cap on a pregnancy test immediately after the absorbent tip is saturated. The cap serves several important functions for the test’s performance and hygiene. Replacing the cap protects the reactive strip from airborne contaminants like dust or moisture that could interfere with the result window and keeps the urine contained on the absorbent material. Manufacturers of midstream tests specifically advise this step before the waiting period begins. After recapping, place the stick on a clean, flat surface with the result window facing upward.
Timeline for Reading Results
Adherence to the manufacturer’s specified waiting period, typically between three and ten minutes, is necessary for an accurate reading. This window allows sufficient time for the urine to migrate up the test strip and for any present hCG to bind to the colored antibodies, forming the test line. Reading the result too early might show a negative result even if hCG is present because the chemical reaction has not fully completed.
Viewing the test after the maximum reading time can lead to a phenomenon known as an “evaporation line.” This line is a faint, colorless streak that appears as the urine begins to dry out on the test strip, leaving a residue. Evaporation lines are not positive results and do not contain the dye that indicates the presence of hCG. To avoid confusing an evaporation line with a true positive, always set a timer and discard the result once the recommended reading window has passed.
Safe Handling and Disposal
Once the result has been read within the valid time frame, the test stick should be managed with basic hygiene. The absorbent tip has been in contact with urine, a bodily fluid. To minimize contact and maintain sanitation, ensure the cap is firmly in place.
The used test is considered regular household waste and should be wrapped before disposal. You can wrap it in toilet paper, tissue, or a small plastic bag to contain any moisture and ensure privacy. The test should be placed in the regular trash bin and never flushed down the toilet, as the plastic components do not break down and can cause plumbing issues.