I believe that many pregnant mothers will choose to use a pregnancy test strip when they have just become pregnant. If there are two bars, it means they are pregnant, but if there is one bar, it means they are pregnant. not pregnant. Examination is more accurate, but 80% more accurate. However, some women trying to get pregnant find that there are two strips on pregnancy test stick, but they go to hospital and find that they are not pregnant. What's going on?

Although most pregnancy test strips are more accurate, some test strips may also contain error messages, such as problems with quality of test strip itself or errors in operation.

1. It is not recommended to use an indicator paper that has expired or has been opened for a long time, since chemicals become invalid after a long time, so it is necessary to check production date.

2. When urine itself is accompanied by some impurities, gray spots also appear.

3. Try reading results 5-10 minutes after urinating, which will be more accurate.

First of all, the pregnancy test method must be correct

1. Try using morning urine (the first morning urination) for testing, which more accurately measures female hormone levels.

2. Maintain a normal water intake, do not drink more water to stimulate urination, as this will lower hormone levels and easily lead to detection errors.

3. Read instructions carefully and follow each step carefully to standard operating specifications.

4. Be aware that some medications can interfere with test results, such as recent use of tranquilizers, ovulation medications, etc. may cause inaccurate results.

Second, choose right time

Because increase in hCG levels is cyclical, it is recommended to take a pregnancy test two weeks after your period so that result can be more accurate.

In clinical practice, cases of false negative or false positive pregnancy test rods are not uncommon, therefore, regardless of results of self-testing, it is necessary to go to hospital for further examination.

1. blood hCG

Besides urine hCG, blood hCG is actually a pregnancy test method that checks composition of hCG in body to determine if you are pregnant. The difference is that instead of testing hCG in urine, it directly tests hCG in blood. Most of hCG in blood exists in its complete form, so test results are more sensitive and accurate.

In addition, time of a blood test for hCG is earlier than urine. Be pregnant, women who want to know if they are pregnant as soon as possible are more suitable for a blood test.

2. Ultrasound

Pregnancy tests, especially high-quality ones, can only tell if you're pregnant, they can't tell if you're pregnant. Therefore, once pregnancy is confirmed by blood hCG, whether or not you want to keep baby, you need to continue with V-ultrasound.

B-ultrasound is usually available after end of menstruation. The longer amenorrhea lasts, better detection effect will be.