2K HB Primer Surfacer. 2K HB Primer Surfacer. 2K HB Primer Surfacer is a two-component fast curing high-build urethane primer surfacer. 2K Primer Surfacer provides exceptional build and good holdout in combination with all U-TECH topcoats.
CVS is usually performed between 10 and 13 weeks from your last menstrual period. CVS may be chosen over amniocentesis because it may be performed earlier in the pregnancy. Chorionic villus sampling detects chromosome abnormalities (i.e. Down syndrome) and genetic disorders (i.e. cystic fibrosis.).
How CVS is performed. CVS is carried out under the continuous guidance of an ultrasound scan. This is to make sure nothing enters the amniotic sac (protective sac that cushions the baby) or touches the baby. The test can be carried out using two different methods: transabdominal CVS and transcervical CVS.