Why Test Pack Results Can Be Changed

You may have found the results of a test pack to detect pregnancy changes, negative at the beginning then positive, or vice versa. Why did this happen and which results were correct? The way the test pack works is by checking the presence of the human chorionic gonadotropin (hCG) hormone in the urine. This hormone level will increase with increasing gestational age. When using this tool, you must know how to use and things that can affect the results of the test pack examination.

Common Reasons for Pregnancy Test Pack Results Change

The following conditions can be the reason why the results of the test pack can change:

1. Evaporation lines

Evaporation lines are faint lines that sometimes appear, in the test pack test area, when the urine has started to dry and evaporate. The evaporation process can change certain composition of urine which sometimes makes test pack results positive when previously negative. Therefore, always read the product usage instructions. Also pay attention to the recommended time to read the results of the test pack, to reduce the appearance of this line. Each product may have different rules.

2. Test pack condition

Before use, make sure the condition of the test pack that you will use. A product that is damaged, out of date, or has a low sensitivity level can provide incorrect inspection results. You should choose a test pack with good conditions and have high sensitivity. To find out the level of sensitivity of a product test pack, you can see the information on the packaging.

3. When doing a test pack

When doing a test pack also affects the change in results. Inappropriate time, for example, just a few days since having sex or during the day, can make the results of the test pack examination inaccurate. In the first condition, the results of the test pack change because the hormone hCG has not been produced or is still very low, so it is not detected. This hormone is only produced 6 days after fertilization and continues to increase every 2-3 days as the age of the uterus increases. In the second condition, the results can change because urine is runny, where you have drunk a lot. This makes the hCG hormone difficult to detect by a test pack, especially if the amount is still small. To avoid these two conditions, it is recommended that you do a test pack 1-2 weeks after your period is late and when urine is still concentrated, which is the morning after waking up.

4. Drug side effects

Some fertilizers, such as Pregnyl and Novarel, are often used in IVF and insemination. Consumption of these drugs can interfere with the results of the test pack, because these drugs contain the hormone hCG or hormones that are similar to hCG. It is better to do a test pack examination about two weeks after stopping taking the drug, so that the rest of the drug is no longer in the body and the results of the examination will be more accurate.

5. Pregnancy conditions

Certain pregnancy conditions can interfere with test pack results, such as chemical pregnancy which can make positive test pack results but not pregnancy and multiple pregnancies. Test pack is one of the favorite choices for checking pregnancy, because it is easy to get and use. However, many factors can affect the results of the examination. Use a test pack by following the instructions printed on the product packaging. If you are not sure about the results of the test pack, whether positive or negative, check with your obstetrician to confirm your condition.