How much blood should be withdrawn in a 24-hour period?

The correct answer indicates that the appropriate volume of blood to be withdrawn in a 24-hour period should be 1-5 percent of the total blood volume of a patient. This percentage is carefully determined to ensure patient safety while allowing for sufficient laboratory testing.

For adults, the total blood volume is approximately 5-6 liters, so withdrawing 1-5 percent translates to about 50 to 300 milliliters. This range minimizes the risk of complications such as hypovolemia, which can occur if too much blood is drawn.

It is essential for phlebotomists and healthcare providers to adhere to these guidelines when collecting blood to maintain patient health and avoid any adverse effects that could arise from excessive blood loss. Understanding the appropriate volume for blood withdrawal is part of ensuring best practices in patient care within the field of phlebotomy.