Linnaeus offers grapevine testing services for Leafroll viruses (GLRaV-1, 2, and 3) and for Grapevine Virus A. Owned and operated by Riversun Nursery, the laboratory tests the company’s source blocks and offers a commercial service to viticulture clients.
Linnaeus uses the "Enzyme Linked Immuno Sorbent Assay" (ELISA) to test for Grapevine Leafroll-associated Viruses 1, 2, and 3, and Grapevine Virus A (GVA).