What’s the difference between a diagnostic and a screening test?
诊断检测和筛查检测有什么区别?
A diagnostic test tests with 100% accuracy and tells you whether a certain condition is present or not. The major disadvantage of prenatal diagnostic methods, such as amniocentesis, is that they carry the risk of miscarriage. Screening tests indicate the risk of having a chromosomal condition, and while highly accurate, they do not test with a 100% accuracy. NIPT by GenePlanet is a screening test, so despite a very high sensitivity (99.02%) for the detection of Down syndrome, Edwards syndrome, and Patau syndrome, it is not a diagnostic test. NIPT by GenePlanet's main advantage over a diagnostic test is that it is 100% safe for both the mother and the fetus.
诊断检测的准确度为100%，会使您知道是否存在某种疾病。羊膜穿刺术等产前诊断方法的主要缺点是存在流产风险。筛查检测可以提示存在染色体疾病的风险，尽管检测的准确度很高，但并没有达到100%。NIPT by GenePlanet是筛查检测，因此尽管其对唐氏综合征、爱德华氏综合征和帕陶氏综合征的检测具有很高的灵敏度（99.02%），但其并非诊断性检测。与诊断检测相比，NIPT by GenePlanet的主要优势在于其对母亲和胎儿100%安全。