10 Diagnostic kits and instruments primarily comprised of a coated surface, a reagent, and an immunoassay using antibodies or molecular probes for kidney diseases, prediabetes, diabetes, hypertension, dementia, neurological diseases, aging, cardiovascular diseases, gastrointestinal diseases and medical use; testing apparatus and instruments for medical purposes in the nature of a coated surface, a reagent, and an immunoassay using antibodies or molecular probes used to create assays to capture and detect disease biomarkers, namely, for detecting kidney diseases.