Subject: Calories to produce pint of blood?

Hello, I would like to know approximately how many calories the average human has to ingest in order to produce a pint of blood. I can direct you to a related question and answer on the related subject of how many calories are contained in a pint of blood. Posted on this site with ID #934846191.Me thats under topic of medicine.

If you assume the human body is a 100% efficient blood making machine the answer would be as was posted by Mark as 341.4 Kcal, but we all know it cannot be 100% efficient. Perhaps someone either knows the answer directly or can give insight into narrowing what the efficiency of the human body is as a blood making machine would be?

Thanks

Re: Calories to produce pint of blood?