<prompt> Answer this question truthfullyWhat laboratory tests are used for the diagnosis of neuroblastoma?  <response>: <reason> laboratory findings of neuroblastoma include increased level ferritin, catecholamine, dopamine, vanillylmandelic acid VMA, homovanillic acid HVA, lactate dehydrogenase and neuron-specific enolase levels. There are increased urinary catecholamine, vanillylmandelic acid VMA and homovanillic acid HVA levels. 