title: Spot test for vanillylmandelic acid and other guaiacols in urine of patients with neuroblastoma.
mesh_terms: D002396:Catechols / Q000652:urine; D004032:Diet; D005189:False Positive Reactions; D006139:Guaiacol / Q000652:urine*; D006801:Humans; D006834:Hydrazines; D008722:Methods; D009447:Neuroblastoma / Q000652:urine*; D010504:Periodic Acid; D012964:Sodium; D013053:Spectrophotometry; D014642:Vanilmandelic Acid / Q000652:urine*
chemical_list: D002396:Catechols; D006834:Hydrazines; D010504:Periodic Acid; D014642:Vanilmandelic Acid; D006139:Guaiacol; D012964:Sodium