Check the listing for details. Quidel Sofia 2 Fluorescent Immunoassay Analyzer 20299 1.12.31. Condition: Used. Listed at 89.95 USD. Daniel Rydell, SanDiego, CA, USA. The sale of this item may be subject to regulation by the U.S. Food and Drug Administration and state and local regulatory agencies. We wont leave you stuck without a solution.