Rusmini, R. and Ridhoni, M.A. 2026. Optimization of Urine Storage with the Addition of 40% Formalin at a Temperature of 2–8°C: Stability of the Amount and Morphology of Sediment Elements. Tropical Health and Medical Research. 8, 1 (Mar. 2026), 1–9. DOI:https://doi.org/10.35916/thmr.v8i1.144.