How Many Calories are in a Vial of Blood? Demystifying Nutritional Content
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4 min read
Did you know that a standard blood donation of one pint contains approximately 450 calories, but this has no bearing on **how many calories are in a vial of blood** drawn for testing? The reality is that the caloric value of a small sample is nutritionally insignificant, highlighting a common misconception about the relationship between blood and diet.
