Phadia Ab

Complaints that specific samples produced false positive EliA GBM results. A positive signal was present when these samples were tested for coating-solution reactivity using EliA wells without antigen.

All equivocal and positive results (greater or equal 7 EliA U/ml) on EliA SmDP well lot 0018 may be incorrect and must be considered invalid. Patient samples in complaint investigations caused unspecific signals up to 22 U/ml on EliA SmDP well lot 0018. The nonspecific signals are not caused by anti-Sm antibodies, nor by streptavidin antibodies.

We want to inform all Phadia 250 system operators performing EliA Assays not to use the function OK to All in any version of Phadia Prime, up to and including 2.1.4, when rejecting and retesting samples with any EliA assay (the OK function may be used for rejecting single tests and dilution of samples in accordance with product DfU).

Potential for reporting low assay results

code 7-102 Liquid Sensor Error