High levels of HMA and VMA are usually the first indication of neuroblastoma.

高水平的HMA和VMA通常是神经母细胞瘤的早期征象。

After the game is over, and the hormones are no longer needed, epinephrine and norepinephrine break down into metabolites like homovanillic acid or HMA, and vanillylmandelic acid, or VMA.

在比赛结束而不再需要这些激素时，肾上腺素和去甲肾上腺素分解成代谢产物，例如高香草酸（HMA）和香草扁桃酸（VMA）。

Diagnosis of neuroblastoma usually starts with testing for HMA and VMA in the blood or urine, since high levels those metabolites may indicate tumors that secrete epinephrine and norepinephrine.

对于神经母细胞瘤的诊断，通常先检测血或尿中的HMA和VMA，这是因为代谢产物含量高可提示肿瘤在释放肾上腺素和去甲肾上腺素。