Which of the following is included in labs to assess compatibility in trauma care?

• A. Blood cross/type and screen
• B. Urinalysis
• C. Chest X-ray
• D. ECG

Answer: (A)

In trauma care, safely preparing for transfusion hinges on compatibility testing. The labs that assess compatibility are the blood type and screen along with a crossmatch. The type and screen identifies the patient’s ABO/Rh type and checks for antibodies that could cause a reaction, while the crossmatch tests the patient’s plasma against donor red cells to confirm compatibility before giving blood. This testing directly guides which donor units can be transfused without causing a reaction, which is essential in emergency hemorrhage. Urinalysis, chest X-ray, and ECG provide important clinical information but do not address transfusion compatibility.