Sample Type: Cell line of choice Intended Use: The Phospho-RSK1/2/3/4 (Ser221/227/S218/232) Colorimetric Cell-Based ELISA Kit allows for qualitative detection of Phospho-RSK1/2/3/4(Ser221/227/S218/232) in plated and fixed cells. Sensitivity: >5000cells/well Assay Time: 4.5 hours Reactivity: Human:S221/227/S218/232, Mouse:S221/227/S218/252 Detection Method: Colorimetric 450 nm Format: Cell-Based ELISA Storage and Stability: Store powder at 4C liquid at -20C. Store other components at 4C. Stable for at least 6 months For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap.