“Lambeau” is a dog from Wisconsin that presented with clinical signs of cough, lethargy and anorexia. A neighbor’s dog recently died from blastomycosis, and Lambeau was known to frequent the same area as that dog. The veterinarian sent a urine specimen to MiraVista Diagnostics for MVista® Blastomyces Ag Quantitative EIA (Test code 316), and the urine antigen test result was negative. The veterinarian was concerned about a false negative.
Question: What additional tests were run to rule out a false negative?