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Measurement of serum ammonia: its use in clinical practice, pitfalls and limitations


Hyperammonaemia is a potentially extremely important indicator of impairment in intermediate metabolism. However, lack of experience in sample handling and confusion about what level is significant, can lead to its devaluation as a test. The aim of this article is to help the non-metabolic specialist to decide when it is appropriate to investigate for hyperammonaemia, to discuss potential investigatory pitfalls and to help in interpretation of results.

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