A siemens technical support technician (tst) reviewed the event.The tst checked the test norms settings, and they were correct.The tst had the customer find a sample identification number and enter it into their centralink system.The tst reviewed the revision and edit screen and found no severities were triggered.The tst requested the customer to open the method on the instrument icon, but the customer stated there was no icon.The tst then request the customer to open the test for ptt.The tst found that the auto-validation for norm severity (ns) was set to 2.The norm is set to 9 severity.It is unknown who changed to setting to 0 as log auditing was not enabled at the time of the event.A siemens customer service engineer (cse) was dispatched to the customer's site.The cse worked through multiple settings and found settings for the norm severity was set to 0.The cse corrected the setting to 9.The customer's technician ran samples to verify correction.The instrument was properly auto-validating samples and holding samples according to severity settings.The cause of the elevated partial thromboplastin time results auto-validating was due to centralink's norm severity setting being improperly set.The instrument is performing according to specifications.No further evaluation of the device is required.
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