SALSABELLA, Ainun; ARYANI, Titin. Sigma Matrix of Ureum and Creatinine in Some Laboratories: Overview: Gambaran Matrik Sigma Pemeriksaan Ureum dan Kreatinin pada Beberapa Laboratorium. Medicra (Journal of Medical Laboratory Science/Technology), [S. l.], v. 5, n. 1, p. 40–46, 2022. DOI: 10.21070/medicra.v5i1.1628. Disponível em: https://medicra.umsida.ac.id/index.php/medicra/article/view/1628. Acesso em: 3 aug. 2025.