Siemens technical operation team checked the instrument and found a full strip inside the instrument.They also found a piece of tissue, a piece of paper, and a pad stuck to the instrument case under the table center.There were also splash marks along the mirror.Siemens technical operation team removed all the debris and cleaned the mirror.Siemens technical operations team performed all service tests on the instrument and it passed all the tests.They also indicated several hcg samples were ran on instrument with no issue.From the investigation, it was determined that root cause for the false negative human chorionic gonadotropin (hcg) result is due to debris inside of the instrument and splash marks on the mirror.Instrument is operational.
|