The cause for the discordant advia centaur xpt ca 19-9 result compared to the alternate method is unknown.
Siemens is working with the customer to investigate this issue.
The limitations section of the instructions for use states: "warning: do not use the advia centaur ca 19-9 assay as a screening test or for diagnosis.
Do not predict disease recurrence solely on levels of advia centaur ca 19-9.
Normal levels of advia centaur ca 19-9 do not always preclude the presence of disease.
Note: do not interpret serum levels of ca 19-9 as absolute evidence of the presence or the absence of malignant disease.
Before treatment, patients with confirmed gi carcinoma frequently have levels of ca 19-9 within the range observed in healthy individuals.
Additionally, elevated levels of ca 19-9 can be observed in patients with nonmalignant diseases.
Measurements of ca 19-9 should always be used in conjunction with other diagnostic procedures, including information from the patient's clinical evaluation.
The concentration of ca 19-9 in a given specimen determined with assays from different manufacturers can vary because of differences in assay methods, calibration, and reagent specificity.
Ca 19-9 determined with different manufacturers' assays will vary depending on the method of standardization and antibody specificity.
Therefore, it is important to use assay-specific values to evaluate quality control results.
" mdr 1219913-2019-00243, mdr 1219913-2019-00244 and mdr 1219913-2019-00246 were filed for the same event.
|