VMA (VANILLYL MANDELIC ACID) QUANTITATIVE, SPOT URINE (SDL12645)
https://www.scanlabglobal.com/shop/sdl12645-vma-vanillyl-mandelic-acid-quantitative-spot-urine-sdl12645-7915
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Measures VMA in spot urine for neuroblastoma screening. Elevated levels suggest tumor, guiding MIBG scan or chemotherapy.