If the pregnancy test done at home allows you to know immediately if you are pregnant or not, should you ignore the analyzes performed in the laboratory? And how reliable are the different diagnostic methods? Here we are with the answers. You can find the プロモコード iherb discounts as you purchase the same from us.
Certified pregnancy tests
Currently, it is possible to buy pregnancy tests in pharmacies, supermarkets or on the Internet. But be careful: to be sure that these tests have been validated by the Ministry of Health, they must include the CE mark.
The national drug safety agency (ANSM) regularly monitors this type of test. If the ANSM finds non-conformity, it requests the manufacturer to bring it into conformity as soon as possible.
The reliability of urine pregnancy tests
- Urine pregnancy tests are 99% reliable from the date of menstruation and provided that the instructions for use are followed very precisely.
- If the urine pregnancy test is positive: it therefore indicates with certainty that you are pregnant (99%).
- If the urine pregnancy test is negative: it indicates that you are not pregnant (99%).
Note: there are cases of “false negative” but, they remain rare. Certain drugs, diuretics, antihistamines – can cause a false negative result. It will then be necessary, in case of suspected pregnancy, to use another type of test or analysis to confirm the result. Also if the test is negative, it may mean that your pregnancy – if there is one – is not yet detectable in your urine. In other words, you took the pregnancy test too early or did not use it with sufficient care.
The self-tests are therefore a “photograph” of your state at an instant T. This state can change in a direction as in the other the following days (pregnancy detectable later or miscarriage canceling the early diagnosis).
What about early pregnancy tests?
Pregnancy tests become positive at a concentration of 40 to 50 micro-units of HCG hormone per milliliter of urine. Now some tests are sensitive to a concentration of 20 to 25 micro-units per milliliter. This very high sensitivity for detecting the pregnancy hormone can make it possible to obtain a positive result when the pregnancy has only started for 9 days, or approximately 5 days before the expected date of the next period.
But, in reality, it depends on women, since the concentration of HCG in the urine is extremely variable. In the first quarter, for example, this concentration varies from 35,000 to 150,000 micro-units per milliliter. If early tests are favored by impatient women, doctors and analytical laboratories prefer that the diagnosis of pregnancy be confirmed by a blood test.
Reliability of the blood test or laboratory urine test
If prescribed by a doctor, blood or urine tests are reimbursed by Social Security. However, it is still possible to have these analyzes performed without a prescription. It will cost you between 18 and 25 €, depending on what you want to know (simple diagnosis of pregnancy by urinalysis, blood test with various tests). Just apply the apply iHerb Coupon promo and you can come up with the best of lot.