Semen Evaluation. Stallion AI Services performs tests on all semen collected at the centre to make sure only the best quality semen is used for AI. More indepth evaluations are also carried out on frozen semen and this service is also available for stallion owners wishing to know the quality of their stallionsâ semen.
Ultrasound is one of the screening tests that may be done in the first trimester to look for birth defects, such as Down syndrome. The first-trimester screening test uses ultrasound to measure the thickness of the skin at the back of the baby's neck.
maternal; serum; screening; neural; tube; defect; spina; bifida; reliable; reliability; ultrasound; pregnancy; pregnant; baby; fetus; Screening tests can be done to work out the chance that your baby has a neural tube defect (eg spina bifida). You may be offered these tests, but not all women choose to have them. It is important before you have a test to think about the possible result and what you might do about it. You can discuss this with your doctor or midwife. Contents. Neural tube defects. Ultrasound scan for neural tube defects. Screening blood test.