What lab values do you check during a blood transfusion?

During a blood transfusion, it is important to monitor vital signs and check for any adverse reactions. Lab values typically assessed include hemoglobin and hematocrit levels to evaluate the effectiveness of the transfusion. Additionally, renal function tests such as blood urea nitrogen (BUN) and creatinine may be monitored to assess for any potential complications, such as transfusion-related acute lung injury (TRALI) or hemolytic reactions. Regular checks for electrolyte imbalances, particularly potassium, may also be necessary.