For both procedures, an ultrasound examination will first be done to detect the placenta (for CVS) or the best site for sampling (amniocentesis). During CVS, local anaesthesia will be injected. Local anaesthesia is generally not needed for amniocentesis.
For both procedures, a fine needle is used to extract the needed sample. The sampling process for either procedure takes around 1 minute.
Please note that all medical articles featured on our website have been reviewed by qualified healthcare doctors. The articles are for general information only and are not medical opinions nor should the contents be used to replace the need for a personal consultation with a qualified medical professional on the reader's medical condition.