Amniocentesis refers to amniocentesis, which usually produces results in about 1~2 weeks, but the exact time for the results to come out may vary from hospital to hospital. Amniocentesis is a prenatal test, mainly through the extraction of amniotic fluid specimens to determine whether the fetus has chromosomal abnormalities and other diseases, this test is usually carried out at 16 to 20 weeks of pregnancy, in most cases, the results will be produced in about 1 to 2 weeks, but there are hospitals due to the large number of patients and other reasons, it may be a little later, the specific how long to produce the results should be based on the provisions of the local hospital. Amniocentesis is an invasive test, after the test should be bed rest for a period of time, do not do strenuous exercise, in addition to pay attention to the wound area, do not touch the water, to avoid infection, if you have abdominal pain or vaginal bleeding after the test, you should consult a doctor in a timely manner.