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急性肾损伤是临床上常见的危重症。近年来研究证实，人类中性粒细胞明胶酶相关脂质运载蛋白（ NGAL）是预测和早期诊断急性肾损伤较为理想的生物标志物。 NGAL具有能较早地出现于肾损伤的可逆阶段、与肾损伤程度呈剂量依赖性、很少被血液净化技术清除等优点；但同时，由于NGAL临界值范围较为宽泛、无权威指南明确指出NGAL的临床意义以及由于检测平台不同而导致检测结果存在差异等问题，也不容忽视。“,”Acute kidney injury is a critical illness in clinical.In recent studies,it has been confirmedthat the human neutrophil gelatinase-associated lipocalin(NGAL) is a relatively ideal biomarker for predictionand early diagnosis of acute renal injury.There are a lot of advantages about NGAL:it can be earlierexpressed in the reversible stage of kidney injury;the concentration of urine NGAL or plasma NGAL is in adose-dependent relationship,that is proportional to the degree of damage;it is rarely cleared by renal replacementtechnology.While there are also some problems that can′t be ignored:the cut-off range of NGAL isbroad;there is no published authorative guidelines about NGAL′s clinical significance;variability may existbetween NGAL assays on different platforms.