This will be accentuated by the dilution effect in urine. Ectopic pregnancies typically produce lower levels of hCG than normal preganancies.Serious urinary tract infections (with high levels of WBC, RBC and nitrite) can occasionally cause a false positive pregnancy test result.Therefore, the presence of hCG in urine should not be used to diagnose pregnancy unles these conditions have been ruled out. Elevated levels of hCG can be caused by a number of conditions other than pregnancy, including trophoblastic disease and some non-trophoblastic neoplasms such as testicular tumours, seminoma, choriocarcinoma, germ cell tumours, hydatiform mole formation, teratoma with elements of choriocarcinoma and islet cell tumour.hCG levels may remain detectable for several weeks after normal delivery, delivery by caesarian section, spontaneous abortion or therapeutic abortion.If pregnancy is suspected a first morning urine sample taken at least 48 hours from the date of this specimen may be of value. ![]() A very early pregnancy with low levels of hCG can give a negative result.If pregnancy is suspected, collect an early morning (first) urine sample and retest. with a low specific gravity) may not contain a representative levels of hCG, potentially leading to a false negative result. The test will become positive 7 - 10 days after conception and by the time of the first missed period levels frequently exceed 100 IU/L.The routine pregnancy test has a sensitivity of 25 IU/L.It may help you decide what's right for you. ![]() Sometimes counselling can help you work through your feelings about being pregnant. If you are not sure you want to be pregnant, it may help to discuss your options with your GP. If your test is positive, you should visit your GP to confirm the pregnancy and sign up for antenatal care. If you are still unsure after a few negative tests, contact your GP. If the result of the test is negative, and you still think you might be pregnant, repeat the test a few days later. your urine is very diluted because you drank a lot of water.you did not wait long enough before checking the result (always follow the instructions - results often take 3 minutes to appear).A 'false negative' means your test is showing negative, but you are pregnant. Your GP may do a blood test to check the level of hCG in your blood.Ī positive pregnancy test is almost always correct. The pregnancy testing kit your doctor uses will look like the kit you buy over the counter. This means you will not have to pee under pressure there. It may help to bring a sample of urine with you if you think you may be pregnant. ![]() Your GP will probably do a urine pregnancy test to check if you are pregnant. Sometimes this is mistakenly read as being pregnant. This is when you leave it too long and an 'evaporation' line appears. Sometimes you can get a 'false positive' from your test. This is where the test shows up as negative even though you are pregnant. The earlier you take the test, the more likely you are to get a 'false negative' result. The later you leave it to take a pregnancy test, the higher the hCG levels will be. In early pregnancy, the amount of the hormone in your system increases. It is present in your bloodstream and your urine. This hormone is produced during pregnancy. Pregnancy tests detect the levels of a hormone called hCG in your urine (pee). The instructions will tell you what the different colours or symbols mean. Read the instructions on the pregnancy testing kit before using it. They are also sold in many shops and supermarkets. ![]() You can buy home pregnancy tests over the counter in your pharmacy.
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