Reagent Fluorocell™ PLT Hematology Immature Platelet Fraction (IPF) For XN-Series Automated Hematology Analyzers 2 X 12 mL In the Platelet-F channel, platelets are identified and counted using a platelet-specific, fluorescent dye, oxazine, which stains the rough-surface endoplasmic reticulum and mitochondria.