LifeXtend™ conjugate stabilizer/diluent is a proprietary multi-component reagent system that stabilizes antibody-alkaline phosphatase conjugates both at 4°C and at ambient temperature. By using LifeXtend™ stabilizer/diluent AP conjugates can be stabilized during use and stored as pre-diluted, ready-to-use reagents thus eliminating waste and improving consistency from experiment to experiment. LifeXtend™ shows superior performance in accelerated stability tests at 37°C, underlining its potent life-extending properties under standard conditions of storage and use.