Evaluation of Two Kinetic Methods for Serum Amylase
Author Information
Author(s): Marion G. Anderson, Anne M. Kelly
Primary Institution: Department of Biochemistry, Hawkhead Hospital
Hypothesis
Kinetic methods for measuring serum amylase may be preferable to traditional end-point chromogenic methods.
Conclusion
Both kinetic methods evaluated are precise and convenient for measuring serum amylase, with advantages over the traditional Phadebas method.
Supporting Evidence
- The Boehringer method was linear over a range of amylase activities from 10,500 IU/1 down to 656 IU/1.
- The Beckman method was found to be linear up to an activity of at least 8,100 IU/1.
- Both methods showed between-batch CVs of 3-6%, indicating good precision.
- The Boehringer method allows for longer stability of reagents when stored separately.
Takeaway
The study tested two new ways to measure a substance in the blood called amylase, finding that both methods work well and are better than the old way.
Methodology
The study compared two kinetic methods for serum amylase using a Cobas Bio centrifugal analyser and assessed their performance against the Phadebas method.
Limitations
The reagents for the Beckman method are only stable for two days at 4C, which may limit their usability.
Participant Demographics
Sera with amylase activities ranging from 71 IU/I to 10,500 IU/1 were obtained from hospital patients and local general practitioners' patients.
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