Abdelsalam, Kamal Eldin Ahmed, and Hubeldin Taha Ahmed. “Extra-Analytical Quality Control of Serum Total Calcium (Collection of Blood in Supine State and Correction Using Serum Albumin Levels)”. International Journal of Sciences: Basic and Applied Research (IJSBAR) 23, no. 1 (June 25, 2015): 377–382. Accessed September 11, 2025. https://www.gssrr.org/JournalOfBasicAndApplied/article/view/4268.