Shop Print Media, No drawers, 92% Polyester / 8% Spandex, Dry Pro™, Submucosal Lifting Agent, Light Skin Tone, 1 X 5 mL, For Calibration of the Alinity i Analyzers when used for the Quantitative Determination of the Total Binding Capacity of Human Serum or Plasma for Thyroid Hormone Thyroxine