This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Miscellaneous (Bio-Chemistry), Subject name: Biochemistry
pH of the whole blood is estimated in 
Select and explain. 
A. Plasma, B. Serum, C. RBC, D. Whole blood
A: Plasma
Answer: A: Plasma 
Explanation: Ans: a (Plasma) Ref: Vasudevan 4th ed/p. 346.The pH of plasma is 7.4. The pH of plasma is maintained within a narrow range of 7.38 to 7.42