Karen
                    
                    
                    
                    
                    
                    
                    
                        
                        
                        Hi I read your message and I'm not sure if you mean for yourself or for your baby.  I know for myself, they did a blood test to see about my chromosomes.  I think maybe that could answer your question.  The do a specific blood test for that.  They did this for me because my unborn baby has Trisomy 13.  I hope I was of some help.