How accurate is the pregnancy test after IVF?
The accuracy of the pregnancy test after intense in vitro (IVF) will depend on the type of hormonal supplements and drugs administered during treatment. Many women receive injections of human chorionic gonadotropin (HCG) to help maintain any resulting pregnancy, and this could cause inaccurate results of pregnancy tests. This is because HCG is the same hormone produced by developing embryos and it is detected by most pregnancy tests that provide a positive result. HCG artificial injections could lead to false positive.
In women who receive HCG during treatment, the pregnancy test after IVF may not be accurate if they are not really pregnant. The domestic pregnancy test could pick up artificial hormones and provide a positive result in women who are not pregnant. However, women who are actually pregnant will receive an exact result. In general, it is good to wait 24 hours after every 1,000 HCG units provided during treatment. After this time the pregnancy test should be accurate, although every woman should discuss the test protocol with her doctor.
women who do not receive HCG during treatment can bring the same levels of accuracy as any other woman during IVF. Most domestic pregnancy tests are approximately 99% accurate when it is taken one day after a missed menstrual period. If it is taken earlier, it is possible to obtain a false negative result, because HCG may not be present in sufficiently high quantities for a standard test to detect at that time. Each type and test brand can have their own sensitivity evaluation, so women are encouraged to explore the kind they will use.
After ten minutes, no pregnancy test should be read. Although it is known that rare, false positives appear as soon as the test time has passed. Any lines that appear after ten minutes are calledEvaporalinia oviates are the result of evaporation of moisture from the test strip where a positive result would appear.
Most of the time, women will be advised to perform a pregnancy test after IVF in the medical office or at the fertility clinic to ensure the most accurate results. Incorrect tests could affect the result. In the controlled atmosphere of the clinic, results can be more accurate. Blood tests that test the exact level of HCG in the female system and are the most accurate and are right almost 100% of the time.
If the pregnancy test is negative after IVF, but after a few weeks there is no menstrual period, a second test may be given. False negatives are quite common when using urinary tests and is usually the result of testing too early. Ultrasound can also be made to try to detect potential pregnancy or find out what other factors can prevent the onset of the period.