Any suggestions on the cause of an undetectable CK activity?
The patient is a 76yr old Caucasian male, with a history of renal failure and fast AF. Current creatinine around 180.
On looking back, he had a CK of 76 IU/L in 1997 and in 1999 had an MI when his CK rose to 407 IU/L. However there was a query about reinfarction 1 week later and at that time his CK was 15 IU/L. On his most recent admission, CK was undetectable on our Olympus 640 - this was confirmed on a Vitros analyser. Current drug therapy - digoxin, prednisolone, aspirin, ranitidine, amiodarone, amoxycillin (chest infection), frusemide and heparin. Patient is thin & wasted - but should that alone leave him with an undetectable CK?
Margaret F Cutler
Department of Clinical Chemistry
Dewsbury and District Hospital
Halifax Rd
Dewsbury
WF13 4HS
West Yorkshire
Tel. +(0)1924 816236
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