- The total activity for the cholinesterase enzyme in blood is measured, also known as butyrylcholinesterase.
- A cholinesterase phenotype for the patient is also reported as this will enable the doctor to predict the likelihood of suxamethonium apnoea and, if present, the extent of any apnoea. The phenotype is a study of the characteristics of the enzyme activity and is determined by the effect of a range of compounds that inhibit the cholinesterase enzyme
- If a phenotype is difficult to confirm or there is an atypical type in the immediate family, genotype studies which identify the inherited genes, as opposed to the enzyme, should be considered.
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