The Sorbitol Dehydrogenase SDH UV test is an assay that quantifies the activity of the SDH enzyme in biological samples using ultraviolet UV spectroscopy. SDH is involved in the metabolism of sorbitol a sugar alcohol. Elevated levels of SDH are often associated with liver damage. This test is particularly useful in veterinary medicine for monitoring liver health in animals but it can also be applied in human medicine for the evaluation of certain metabolic pathways.