Azotaemia may cause the clinical syndrome of [[Uraemia|'''uraemia''']], affecting multiple organ systems. The causes of azotaemia are usually divided into pre-renal, renal and post-renal:
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Azotaemia may cause the clinical syndrome of [[Uraemia|'''uraemia''']], affecting multiple organ systems, and may involve retention of an array of different toxins in the body, which a healthy kidney would have excreted in the urine.
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The causes of azotaemia can broadly be classified into pre-renal, renal and post-renal, however clinical differentiation is always challenging, as the manifestation is almost always, overlapping.