Answered by The Community. Making the world better, one answer at a time. Auricles are the two upper chambers of the heart divided into right auricle and left auricle.Right auricle always contains deoxygenetated blood (blood mixed with carbon dioxide) and left one has the oxygenetated blood.he two types of the blood do not get mixed up as the two auricles are separated from one another by an interauricular septum.
False negative results (test is negative, but you are actually pregnant) usually occur if the blood pregnancy test was performed too early (a rule of thumb is that it takes at least 7 days after conception for the test to show a positive result).
They can pick up hCG earlier in a pregnancy than urine tests can. Blood tests can tell if you are pregnant about six to eight days after you ovulate. Doctors use two types of blood tests to check for pregnancy: 1  Quantitative blood test (or the beta hCG test) measures the exact amount of hCG in your blood.2  So it can find even tiny amounts of hCG. 3  This makes it very accurate.f a HPT says you are pregnant, you should call your doctor right away. Your doctor can use a more sensitive test along with a pelvic exam to tell for sure if you're pregnant. Seeing your doctor early on in your pregnancy can help you and your baby stay healthy.