Hi all,
We have been encountering a problem with
false positive results on the Beckman AccuTnI. This has meant that we have been
repeating analysis on all positive result to check agreement before releasing
results. The hit rate is approximately 2% of all positive samples. Beckman’s
main suggestion for this caprice is that it is a result of “microclots”
floating around due to insufficient time being allowed for the blood to clot
before spinning. However, about 80% of the samples in which we’ve found
this have been from heparin bottles.
The upshot of this is that the turn-around
time for positive results is increased, not to mention the additional cost of
repeating tests that are in agreement 98% of the time
Have any other users of this system
encountered the same problem?
Regards,
Iain
Dr Iain Woodrow,
Clinical Scientist,
Department of Clinical Biochemistry,
(01924) 317061