1.AFP, though, can be elevated by other conditions as well, so in order to get a more exact diagnosis, additional blood tests for human chorionic gonadotropin, or HCG, inhibin A, and estriol, as well as an ultrasound are usually done.

但白也会由于不少其它原因而升高，所以为了得到更准的诊断，还需检查人绒毛膜促性腺激素（HCG）、抑制素A、雌三醇，作超声检查。