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
All of the following assays are used for estimation of total serum protein, except - 
Select and explain. 
A. Biuret, B. Bradford, C. Lowry's, D. Bromocresol green
D: Bromocresol green
Answer: D: Bromocresol green 
Explanation: Commonly used serum protein estimation assays (calorimetric assays)

Biuret method
Lowry method
Bradford method
Smith method (Bichinconinicacid)