Some Lots of PF4 Concentrated Wash (10X) are a slightly more dilute concentration. This may lead to slightly increased Optical Density (OD) values. Samples with a higher background reactivity may demonstrate false positive result (borderline reactivity) at or near the cutoff for the assay.
Genetic Testing Institute,inc
Class I - Dangerous
Lifecodes PF4 Enhanced assay, lot number 3000389, is being recalled because of observed inconsistent replicate values when testing the kit Positive Control and patient samples. The variation in reactivity can lead to invalid assays. If an invalid assay is obtained, those results should not be reported and the test should be re-run. An invalid assay would not result in significant harm to a pati