This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Biochemistry
[{'content': 'Which of the following estimates blood creatinine level most accurately \nSelect and explain. \nA. Jaffe method, B. Kinetic jaffe method, C. Technicon method, D. Enzyme assay', 'role': 'user'}, {'content': 'Answer: D \nExplanation: D i.e. Enzyme assay Gas chromatography - isotope dilution mass spectrometry (GC- IDMS) is considered the method of choice for establishing the true concentration of creatinine in serum because of its excellent specificity > HPLC > Enzyme assay > Alkaline picrate methodsQ.', 'role': 'assistant'}]