Accuracy of dating pregnancy tests

Between weeks 24-28, you will be screened again for diabetes (some women develop pregnancy-related diabetes, known as gestational diabetes, which usually clears up after the baby is born), and patients who are Rh negative will be checked for Rh antibodies (which can be treated through a series of injections), says Petrikovsky.At the end of the pregnancy, between weeks 32-36, you may be retested for syphilis and gonorrhea, as well as for group B strep (GBS), a type of bacterium that can cause meningitis or blood infections in newborn infants; if you test positive for GBS, you will be given antibiotics during labor and delivery to minimize the risk of transmitting the bacterium to your infant.Ashkenazic Jews (those of Eastern European descent) as well as French Canadians and Cajuns are at high risk for Tay-Sachs, a debilitating neurological disease that usually results in a child's early death.Since the increased use of screening tests to determine whether parents-to-be are carriers of Tay-Sachs became more prevalent in the 1970s, the incidence of the disease has dropped dramatically, says Weinblatt.Depending on the results of the blood tests, the age of the mother (ages 35 and above), or the family history of the mother-to-be, the doctor may then suggest further prenatal tests, such as chorionic villus sampling (CVS) or amniocentesis, both of which detect Down syndrome or other abnormalities.

Once you know for certain that you're pregnant, schedule regular appointments -- even if you're feeling fine. Meredith collects data to deliver the best content, services, and personalized digital ads.We partner with third party advertisers, who may use tracking technologies to collect information about your activity on sites and applications across devices, both on our sites and across the Internet.If you have regular periods and you miss one, that's a pretty good sign (although not a foolproof one).Another indication, he says, is simply whether you think you're pregnant.

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These tests are all routine and are performed on every pregnant woman, Petrikovsky says.

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