Doctor’s visit. A false urine pregnancy test for detect pregnancy.
Pregnancy factor- a fusion of sperm and egg into one of the fallopian tube. After 7-10 days, it’s a bit grown up “whole” comes from the tube into the uterus, attached to its wall and starts producing a hormone – human chorionic gonadotropin – HCG. He enters the bloodstream, and thence into the false urine pregnancy test may. The concentration of HCG increases rapidly during the early stages of pregnancy. Measuring a hormone produced in obstetric ultrasonography units, per milliliter of urine or blood (mIU / ml).
False urine pregnancy test
Sensitivity false urine pregnancy test may be different: 25 mIU / ml, 50 mIU / ml, 100 mIU / ml, etc. Most (but not all) are sold in pharmacies false urine pregnancy test have a sensitivity 25 mIU / ml. What does this mean?
- Test kit with a sensitivity of 25 mIU / ml – becomes +, ie, shows that a woman is pregnant when the concentration of HCG in the body 25 or more units, if the concentration of HCG 24 mIU / ml or less, then the test will not show false urine pregnancy test y, and this so-called false urine pregnancy test negative results, ie pregnancy is, and the test shows that it does not exist, it is because the concentration of HCG in the body so far below the threshold of sensitivity of the false urine pregnancy test;
False urine pregnancy test sensitive
- False urine pregnancy test of 50 mIU / ml – get + when the concentration of HCG in the body 50 or more units;
- False urine pregnancy test with a sensitivity of 100 mIU / ml – get + when the concentration of HCG in the body 100 or more units, etc.
Suppose you bought a false urine pregnancy test with a sensitivity of 25, 50 and 100 units. At the time of the pregnancy test in your body contains 37 units of HCG. Then test with a sensitivity of:
- 25 mIU / ml – will be positive, ie show that you’re pregnant
- 50 mIU / ml – will be shown false negative urine pregnancy test, will be + after some time
- 100 mIU / ml – will be shown false negative urine pregnancy test, will be + after some time.
That is why, if the first false urine pregnancy test is negative, the gynecologist always recommends the re-test by 7-10 days (provided that menstruation did not come). Only two false urine pregnancy test negative results at intervals of 7 days can be concluded that there is no pregnancy.
Attention!
The result may be falsely negative if the test is conducted in a very dilute (ie, very little yellow) urine. That is why it is recommended that a test was carried out either in the urine after a night’s sleep, or in the urine 3-4 hours after last urination (with 3-4 hours in these used conventional, rather than an increased amount of liquid).
It is important that false urine pregnancy test result (positive or negative) “read” in the first 5 minutes after dropping the test strip into the urine. Appearance of the second strip on the false urine pregnancy test after 5 minutes, can not reliably say that you have a pregnancy. Even the appearance of a weakly expressed band in the first 5 minutes, indicates that the test is positive.
It is important to observe the proper storage conditions for the test! If before the false urine pregnancy test , you kept it in the fridge for a while, you know that the test will not work. A false urine pregnancy test in the urine before its execution must be stored at room temperature.
In addition to false-negative results, there are also false positive urine pregnancy test results, ie test shows pregnancy, but in reality it is not. This can happen when:
- Woman in the next 2-3 weeks has used special hormones to stimulate ovulation (Profasi, Pregnyl, etc.) that are being preserved for some time in the body, can give a positive result on a pregnancy urine, while the pregnancy itself is not .
It is important to understand that a false urine pregnancy test for pregnancy – is a semiquantitative method. Ie if you bought a test with a sensitivity of 25 mIU / ml and, after him, got + result, this means:
- That you’re pregnant, but where there is a pregnancy in the womb or outside it – this test can not tell;
- The concentration of the hormone HCG in your body for more than 25 mIU / ml, but the exact concentration of the false urine pregnancy test hormone in the body test can not show (it could be 30 and 300 units).