I had no idea that I wasn't going for some regular test as my children are 13 years apart. I went for the nuchal fold test (spelling?) and was told it was on the large side and that the chances were 1 in something that my baby would have down syndrome or something. I elected immediately to do the cvs (where they pull fluid from the placenta while watching the baby on ultrasound - and check the chromosomes for an accurate diagnosis).
It was the most painful thing I have ever gone through. Not to mention, the doctor who I was sent to, had zero bedside manner. As I sat there and cried when he told me that the nuchal fold was HUGE and I should terminate, he went on to continue telling me about all the research he had done (was one year out of school) and that my child had a 1/3 chance of having some type of chromosomal disorder, a 1/3 chance he would have some serious issue like a heart defect, OR a 1/3 chance that he would appear normal but no one knows what is really wrong.
ALL this based on an average that differs with professional opinions (size of the nuchal fold).
I left bawling and although I would know for sure within 3 or so days about the chromosome test, I was so distraught I had no idea what to do. I called my husband, he came home, I told him that I wanted to be taken IMMEDIATELY for an abortion - no thinking just GO. (please don't judge, my obgyn told me that this is a VERY natural reaction).
My ob gyn then talked me into going to a completely different set of doctors for a second or third opinion and THEN would discuss other options. This was 4 days before Christmas. I went to my home state and my cell phone never left my hand. The doctor who performed the cvs called and said that the tests were completely normal BUT he still recommended termination. (this was Christmas EVE!)
I got back in town and my ob gyn had me into another specialists office in 2 days. This doctor said that the nuchal fold looked completely normal and was maybe a TINY bit on the high end of average. And, although he could not tell me that the first doctor was wrong, he did say this: "I can tell you that there is no way that a nuchal fold could be 'huge' and 6 days later be normal." He then said that the first doctor was just a year out of med school. I could tell he was extremely disappointed.
I went back to my absolutely WONDERFUL ob gyn (Dr. Ivan Rovner in Plano) and he stress tested the baby almost weekly and said that if nothing is wrong with my son it should go into case history.
My son was born by csection a week early, weighing 8 lb 15 oz. He is COMPLETELY 100% normal, and actually is extremely advanced. Extremely. He is 2 and 1/2 now and is being placed in a class room with older 3's because he is on their level.
He is a 4 year old in a 2 year old body. After he was born, my dad (a doctor) told me to write a letter to the original specialist who performed the cvs. I did, and received a letter back stating that he still stood by what he believed.
I was 11 weeks pregnant at the time, and had to spend my entire holidays with my family pregnant with a baby I had no idea what was going to happen with.
I don't know about a blood test, but I wish I could remember that doctor's name. He works out of baylor or medical city dallas.
I know this was really long, but if I were to ever have another baby (tubes tied but anyway) I would NOT do the probability or nuchal fold test. I would do cvs again if I had to. But I would NOT make a judgment on what one doctor says. My ob gyn, Dr. Rovner, was wonderful. He sat down with me as I cried and told me that he would support me in any way but please get a second or third opinion. I did, and I couldn't be happier. I am blessed with the most awesome little boy.
Sorry for going on and on, but I rarely tell the story b/c it is so complicated, but I can't stand the thought of someone going off one opinion!
Good luck!