This is a procurement for 49 Human Humanin ELISA kits to measure humanin levels in human serum for continuity and validity of ongoing scientific research. The kits must be the specific model CSB-EL015084HU to ensure direct comparability with the government's previous data and published studies. Key technical requirements include a 96-well format, a sensitivity of <7 pg/ml, and compatibility with a SpectraMax M2 Microplate Reader. The performance location and budget are not specified.