Effective March 20, 2017, Spectrum Health Regional Laboratory’s Immunology department will be switching dsDNA vendors from Varelisa ™ to ThermoFisher/Phadia ™.
Both manufacturers (mfr) have similar methods but different reference criteria presumably due to manufacturer specific dsDNA epitopes identified.
The interpretive cutoffs will be changing, please refer to the table below.
|Former Reference Range||New Reference Range||Unit|
|Equivocal||35 – 55||10-15||IU/mL|
Due to this change, test #8470 – DNA ds Antibody Level will be discontinued.
New Test: Anti-dsDNA Antibody (SH# 7161)
Any questions concerning this change may be directed to the ImmunoChemistry department via the “Contact Us” link.