Duaa Abdulzahraa Al-Rammahi. 2026. “Spectrophotometric Determination of Creatinine Using a Modified Diazo Coupling Reaction: A Reliable Approach for Biomarker Analysis in Human Serum”. American Journal of Biology and Natural Sciences 3 (2):270-80. https://doi.org/10.51699/ajbns.v3i2.1952.