There are many ways to check for hyperemesis gravidarum, for example, vaginal ultrasound can be performed, when vaginal ultrasound examination is performed, the uterine cavity will suggest that there is an uneven and dense or short stripes of echoes. It is usually snowy or blistered, honeycombed, and accompanied by bilateral or one-sided ovarian cysts, and the uterus is rich in blood flow signals. Human chorionic gonadotropin (HCG) can also be measured. Blood HCG rises in normal pregnancy, but in gravidas, it is often higher than the normal range and may be over 100,000 or even 2.4 million in some cases. DNA ploidy analysis can also be performed. When DNA ploidy analysis is performed, it often indicates that the karyotype of the chromosomes may be diploid or, in some cases, triploid in hyperemesis gravidarum.