Fifty normal children served as control group. Results VMA/Cr, HVA/Cr at random urine had good relationship with total VMA, HVA in 24*! h urine ( r = 0.92 and r = 0.91 respectively ).

• 结果 随机尿VMA/Cr、HVA/Cr与 2 4h尿VMA、HVA总量的相关性分别为r =0 .；92和r =0