Lactate Dehydrogenase (LDH) is one test that uses this effect and it is used for monitoring some cancers. It's non-specific to cancer, but elevated levels can b

Lactate Dehydrogenase (LDH) is one test that uses this effect and it is used for monitoring some cancers. It's non-specific to cancer, but elevated levels can be cause by a range of not-great conditions. https://en.wikipedia.org/wiki/Lactate_dehydrogenase#Testing_in_cancer https://en.wikipedia.org/wiki/Lactate_dehydrogenase#Testing_...