Alpha-fetoprotein test. This is a simple blood test that measures the level of a substance called alpha-fetoprotein that is associated with some major birth defects. An abnormally high or low level may indicate the need for further testing.
It is common for pregnant women irrespective of their age, to be offered the "Triple Test" to assess the chance of having a baby with Down Syndrome. A positive triple screen test is a maternal blood screening test that looks for three specific substance- Alphafetoprotein, Human chorionic gonadotrophin and Estriol. These test do not diagnose the disease and only indicate that further testing should be done . It is performed between 11-14 weeks of pregnancy.
The first signs of pregnancy is the Ultrasound Confirmation. An ultrasound image can indicate wirhout a doubt if there is more than one fetus. An other signs for pregnancy is a abnormal AFP test result. AFP (Alphafetoprotein) screening is a blood test performed on pregnant mothers during the second trimester.
A blood test, called the AFP (alphafetoprotein) or triple screen, may help a pregnant woman find out her baby's risk of several diseases, including Trisomy 21 (Down Syndrome) and Trisomy 13, though it can not give a definite answer.
There are two common oncofetal antigens, alphafetoprotein (AFP) and carcinoembryonic antigen (CEA). Carcinoembryonic antigen CA 72-4 is a more recently discovered oncofetal antigen just coming into usage.
There are two common oncofetal antigens, alphafetoprotein (AFP) and carcinoembryonic antigen (CEA). Carcinoembryonic antigen CA 72-4 is a more recently discovered oncofetal antigen just coming into usage.
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Validity of a test refers to the ability of test to test what it is supposed to test
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The validity of a test refers to the extent to which it measures what it intends to measure. It assesses if a test is actually capturing the construct or concept it is designed to measure. Validity is essential to ensure that test scores are meaningful and can be generalized to the intended population.