A skill, talent, or capacity: a student of many abilities. 2. The quality of being suitable for or receptive to a specified treatment: the ability of a computer to be configured for use as a file server.
Both blood and urine pregnancy tests check for the presence of a chemical called human chorionic gonadotropin, which is produced during a pregnancy. Waiting two weeks post conception (one the first day of a missed period) is recommended, but positive results can be detected as early as one week after conception. After a pregnancy has been detected by a blood or urine test, your doctor will request an ultrasound to confirm that a live embryo is present. Ultrasounds can first be seen at five weeks pregnancy and an embryo and heart beat can be detected by six weeks.
The test is performed too early. A blood pregnancy test can only detect hCG in the blood at around seven days post-conception. If a pregnancy test is done before that seven days is up, the test might not be able to detect the hCG yet. This can cause a negative result when a woman is really pregnant. Too high hCG levels. Sometimes, a woman will have extremely high levels of hCG in her blood when she is not actually pregnant.