The OSOM Ultra Plus Flu A & B Test is an in vitro rapid qualitative test that detects influenza type A and type B nucleoprotein antigens directly from nasal swab and nasopharyngeal swab specimens obtained from patients with signs and symptoms of respiratory infection. *Refer to the Package Insert for additional performance claims. Product Availability: USA Sample Type: Nasal swab and nasopharyngeal swab Storage and Stability: BD Universal Viral Transport Medium Remel Micro Test M4, M4RT, M5 M6 Medium Bartels FlexTrans Medium Refrigerated samples should come to room temperature before testing.