As needed on positive Matrix results
Testing for subtyping is run after a positive is obtained by Influenza virus Matrix testing. The specimen type(s) listed for this test will provide an adequate sample volume to conduct this test. If multiple tests are to be requested on a specimen, there may not be adequate sample volume to perform each test. Please submit an adequate sample volume to meet the requirements of each test. Routine avian influenza testing is done at the Minnesota Poultry Testing Laboratory.