Why is the pregnancy test ineffective?
Some young couples put having children on the agenda after getting married, especially after sharing the same room, and the woman's menstruation was delayed, so she wanted to know if she won the lottery and was pregnant at the first time. At this time, they generally don't go to the hospital for testing, but want to go to the pharmacy to buy a pregnancy test stick to test whether they are pregnant. When they were excited to test, they unexpectedly found that the pregnancy test stick was very fragile. For example, the pregnancy test shows that it is invalid, which is even more confusing. What if the pregnancy test stick is invalid? How to use it correctly?
First of all, everyone knows that the most economical and convenient way to check whether you are pregnant is to use a pregnancy test stick. When buying, female friends should carefully check the production date and shelf life of the pregnancy test stick to see if it has expired. If the use period is exceeded, the pregnancy test stick will be invalid after use.
Secondly, if you are using the pregnancy test stick for the first time, you may wish to look at the instructions on the use of the pregnancy test stick first. There are detailed instructions in it, as well as simple and clear graphic instructions. You can follow the instructions step by step to avoid the invalid situation caused by improper operation. So you might as well spend more time reading the instruction manual during use to ensure the correctness of the operation.
In addition, morning urine is the best pregnancy test, especially in the early pregnancy. It is best for female friends to take the first urine in the morning as the basis for pregnancy test, so that the test results are the most accurate, and it is generally possible to judge whether they are pregnant after one or two minutes.
Which pregnancy test method is more reliable?
Is the wife pregnant due to delayed menstruation? Test it before you get excited! There are at least four methods of pregnancy test. Do you know which method is the most reliable?
Pregnancy test paper, pregnancy test stick
Accuracy: ★★★☆☆☆
Use pregnancy test paper or pregnancy test stick to determine whether the urine contains pregnancy-specific HCG. Although manufacturers claim that early pregnancy can be detected on 1 day of implantation, that is, the eighth day of ovulation, most products are not so sensitive. Early pregnancy can be detected at least 1 1 day after ovulation. If you want to get the correct result, it is best to do early pregnancy test paper when menstruation is delayed for two weeks.
Instrumental urine test
Accuracy: ★★★★★☆.
The amount of HCG in urine can only be detected if it reaches a certain level. If the detection time is too early, the amount of HCG in urine is not enough for the detection instrument to respond. Go to the hospital for urine test, at least until after menopause 1 week.
PS: Early pregnancy test paper and pregnancy test stick also judge the results by detecting the HCG concentration in urine.
Blood HCG test
Accuracy: ★★★★★★★
After ovulation for 9 days, you can check the HCG concentration in the blood to determine whether you are pregnant. HCG is a special hormone secreted during pregnancy. The concentration of HCG in non-pregnant blood is very low, and it increases obviously after pregnancy. In the first trimester, the concentration of HCG will always increase, increasing by about 1.5 times every two days, reaching the peak at 6- 12 weeks, and then gradually decreasing until it reaches a stable level at 18 weeks.
B-ultrasound pregnancy test
Accuracy: ★★★★★★★
B-ultrasound is to confirm whether you are pregnant by detecting whether there is a gestational sac in the uterus. Compared with the detection of HCG, progesterone and other hormones, B-ultrasound is actually more intuitive and accurate. If you are pregnant for more than 5 weeks, you can get a diagnosis by B-ultrasound. Under normal circumstances, there is a circular or elliptical anechoic dark area in the pregnant uterus, with an average diameter of about 0.5- 1.5cm. Around this anechoic dark area, a thick ring-shaped strong echo can be seen, and sometimes a bud-like light echo of the embryo can be seen.
PS: At present, there is some controversy about the safety of B-ultrasound examination, but if your wife has some early pregnancy abnormalities: the HCG concentration in the blood is too low, rising slowly, and redness can be seen, and the pain in the left and right lower abdomen suggests the possibility of ectopic pregnancy, so you need to use B-ultrasound for further examination.
Characteristics of pregnancy test stick
3. 1, high accuracy: the accuracy of pregnancy test stick is about 85~95%. Because of the multi-layer super-sealed aluminum foil film packaging, the pregnancy test stick is not easy to get wet for a long time, and even if it is stored for 2 to 3 years, the product has a good quality level.
3.2. Quick response: The pregnancy test stick can display the results within 1 minute, and the fastest pregnancy test stick can reach 30 seconds.
3.3. Easy to use: The unique patent of the pregnancy test stick for directly receiving urine eliminates the trouble of receiving urine with a urine cup and sucking urine with a straw, urinates directly on the urine suction hole of the pregnancy test stick, and reads the results from the observation window. Wear disposable plastic film gloves when receiving urine to prevent accidental urine from splashing on your fingers. The whole process can be easily completed in the bathroom, and the pregnancy test stick can be discarded immediately, which not only protects privacy, but also is clean and hygienic, which is very convenient.
What brand of pregnancy test stick is good?
TOP 1, David early pregnancy detection kit
Comments: Very accurate, very easy to use, very affordable.
TOP2, Wanhua pregnant friend early pregnancy test paper
Zan: Little B didn't show up at that time, but I felt something was wrong. My relatives and aunts who should have reported didn't come, and I always felt bored, so I decided to see if I had won the prize!
TOP3, Xiuer early pregnancy test paper
Zan: It was it that discovered the existence of the baby! Hmm. How interesting
TOP4, test paper for rapid detection of early pregnancy
Praise: easy to use and reliable. You can buy it and try it before you go to the hospital.
Kangjie early pregnancy test card TOP5
Praise: I used this product when I was pregnant, and the accuracy rate is still quite high. The price is much cheaper than others. It's really good and cheap.
TOP6, good times early pregnancy test paper
Zan: it's very convenient to use, and one person and one plate make mothers feel at ease! !
TOP7, women's pregnancy test box
Praise: the price is reasonable and the use is convenient. And very accurate.
TOP8, good luck early pregnancy test paper
Comments: Very good, quite accurate.