For Samples: Cell culture fluid & body fluid & tissue homogenate Serum or blood plasma This IDUA ELISA kit is intended for laboratory research use only and not for use in diagnostic or therapeutic procedures. The stop solution changes the color from blue to yellow and the intensity of the color is measured at 450 nm using a spectrophotometer. In order to measure the concentration of IDUA in the sample, this IDUA ELISA Kit includes a set of calibration standards. The calibration standards are ass