Category: Medical facts

The average person loses virtually no calories during a standard blood test, as the amount of blood taken is too minimal to trigger a significant metabolic response. While a full blood donation can prompt a calorie-burning process to replenish blood cells, a routine blood test is a completely different procedure with a negligible impact on energy expenditure.

Did you know that a standard normal saline IV contains zero calories, despite being a life-saving medical treatment? This simple fact highlights a crucial distinction between rehydration therapy and nutritional support. Many people assume any fluid administered intravenously provides energy, but saline’s purpose is purely functional.