Shop Print Media, No drawers, 92% Polyester / 8% Spandex, 19 oz., Submucosal Lifting Agent, Contact Closure, 12-1/2 Inch Length, 11 Inch Tubing, For Calibrating the Quantitative Elecsys PTH Assay for intact PTH (parathyroid hormone) on the Elecsys and cobas e Immunoassay Analyzers