Siemens Healthcare Diagnostics Inc. has confirmed the potential for falsely elevated hcg results due to sample carryover. This can be observed when a sample is assayed for HCG immediately after an undiluted sample with a HCG value of GT;5000 MIU/mL. This issue impacts serum and urine patient samples, as well as quality control samples and adjustors. The effect of carryover varies based on the concentration of the high HCG sample. Recall start date: Mar 1, 2022
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