测定意义：丙酮酸通过乙酰CoA连接葡萄糖、脂肪酸和氨基酸三大代谢，起着重要的枢纽作用。

测定原理：丙酮酸与2,4-二硝基苯肼作用，生成丙酮酸-2,4-二硝基苯腙，在碱性溶液中呈樱红色。

需要的仪器，耗材:可见分光光度计/酶标仪、台式离心机、可调式移液器、微量石英比色皿/96孔板、研钵、冰、蒸馏水。

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