Anti-Fyb Polyclonal Phenotyping Reagent Seqirus Anti-Fyb contains polyclonal antibodies to detect the presence of the Fyb antigen on red blood cells. Application Anti-Fyb polyclonal phenotyping reagent is used for phenotyping of red blood cells using indirect techniques and is validated for use by tube Indirect Antiglobulin Test (IAT). Catalogue No.: 02210501Pack size: 1 x 2mL