Unlike the gB test, this kit targets the gE protein, which is specifically deleted in most modern pseudorabies marker vaccines. This allows the gE test to distinguish between vaccinated animals and those with wild-type (field) infection, a critical distinction for pseudorabies eradication programs relying on marker vaccine strategies (the so-called DIVA principle: Differentiating Infected from Vaccinated Animals). Shelf life 12 months, store at 2-8°C.