The Prev-DAF Testing Kit was used to detect mtDNA A1555G mutation.The GJB2 235delC mutation was identified by restricted enzyme Apa I digestion method.

• 为减少社会和家庭的负担，进行聋病的分子流行病学调查显得非常重要，根据调查结果可以正确指导产前检查，从而减少聋儿的出生率。