采用基因分析技术，在DNA或RNA水平上对某个（或某一组）基因进行分析，从而对相应疾病作出诊断genetic diagnosis

• 美国NIH现在已开展对乳腺癌、结肠癌的基因诊断。

  The NIH in the United States has already developed genetic diagnoses for breast cancer and colon cancer.

• 基因诊断预防耳聋在我国成为现实。

  The prevention of deafness by genetic diagnosis has become a reality in China.