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Many people use HCG pregnancy test strip, but you know all these details?
Emission rate of human chorionic gonadotropin is not the same, so early pregnancy test strips are generally delayed in the menstrual period of seven to ten days do not come, or eighteen days after the same room can be measured, and it is best to use morning urine test .
But HCG pregnancy test strip is only a primary screening method, can not be over-reliance on Oh, because:
1. Early pregnancy test strips can only detect whether pregnancy, and can not determine whether normal or ectopic pregnancy, and ectopic pregnancy human chorionic gonadotropin (HCG) may be lower than normal intrauterine pregnancy, the test results may be weakly positive.
2. Many external factors can lead to pregnancy test strip test false-negative or false-positive, affecting the test results.
3. If the results of their own test showed negative, menstruation still did not come after 7 days, it should be tested again. If the result is not negative, it is best to go to the hospital for examination.
4. Pregnancy test strips can not detect the size and location of gestational sac.
In addition, in pathological conditions, such as ectopic pregnancy, hydatidiform mole or choriocarcinoma, etc., there will be a positive reaction. Therefore, test positive pregnancy test strips, you should also go to the hospital to confirm.
Pregnancy test paper accurate?
Experts said that the correct test rate of early pregnancy test strips ranging from 50% to 98%, very different.
The main factors that affect the accuracy of test strips are the following:
1. Test morning and evening
Morning urine generally have the highest HCG value, so many instructions are recommended when the morning of the test, but this is not absolute.
2. Timing of detection
HCG is usually found in urine after a few days of implantation of the fertilized egg, and a certain amount of HCG can be detected. Therefore, women with normal menstruation usually need to detect HCG in the urine after the menstrual period is delayed. Women with long menstrual cycles or abnormal ovulation may be detected 40 to 44 days after menopause.
3. Dilution of urine
If you drink too much, it may cause urine to dilute, leading to false negative results.
4. Immersion length
Sometimes, the length of the urine immersion test strip is too long to make the test result difficult to judge.
If you want to improve the test results of pregnancy test strips, you should pay attention to read test strips test instructions carefully and follow the instructions in the order you want. Also pay attention to the production date to prevent expiration and invalid test results.
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