Altaf Hussain, Misbah Ullah, Abdur Rehman Babar, Qazi Salman Khalid, Muhammad Kashif, Zia Ullah Khan, & Khan Zeb. (2026). APPLICATION OF SIX SIGMA DMAIC METHODOLOGY FOR REDUCING PRE-ANALYTICAL AND POST-ANALYTICAL ERRORS IN CLINICAL LABORATORY TESTING. Spectrum of Engineering Sciences, 4(4), 205–217. Retrieved from https://www.thesesjournal.com/index.php/1/article/view/2400