Pregnancy test - Information, specialists, frequent questions.

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Information about Pregnancy test

Is a specific urine or blood test that can detect hCG and confirm pregnancy; hCG is a protein produced in the placenta of a pregnant woman. hCG is also produced by some germ cells tumors and increased levels are seen in trophoblastic disease.

hCG is commonly detected in a urine test, but it can also be measured in blood samples. The qualitative urine or blood test is routinely used to confirm pregnancy. In certain patients, quantitative blood hCG test over several days may be used to rule out an ectopic pregnancy, or to monitor a woman after a miscarriage. A quantitative hCG test can also be useful when trophoblastic disease or germ cells tumors are suspected. hCG test is also used to monitor treatment in these cases.

There are some conditions that may give false negative results, including when the test is performed too early in the pregnancy, or in very dilute urine; sum drugs, such as diuretics, may also cause false negative results. While, in the other hand, protein or blood in urine, some drugs (such as antinconvulsivants, hypnotics, tranquilizers or anti-parkinson drugs) and some other compounds may give false positive results.

If results are questionable, they may be confirmed by testing with a different method.

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