<prompt> Which of the following is not an indication of amniocentesis for chromosomal detection:Gestation diabetes mellitusPrevious Downs childMaternal age more than 35Parents with chromosomal anomaly  <response>: Gestational diabetes milletus is not an indication of amniocentesis.The absolute indication of amniocentesis are chromosomal disorders like trisomy21,diagnosis of neural tube defects. Refer page no 502 of Text book of obstetrics ,sheila balakrishnan,2 nd edition. According to ACOG2012 invasive testing is offered to women 1.age35 years. 2.previous affected baby 3. antenatal sonography indicationg fetal risk of sonography 4. paner or pregnant mother carrying robesonian translocations 5. abnormal test results in first and second trimestercombined screening Reference: Williams Textbook of Obstetrics 24th edition page no 292 