Dialysis Technician Practice Exam

Which test must be performed on new dialyzers before use?

1. Blood type compatibility test

2. TCV (Total Cell Volume)

3. Serum creatinine test

4. Electrolyte panel

The correct answer is: TCV (Total Cell Volume)

The Total Cell Volume (TCV) test is essential for new dialyzers before use to ensure that they are functioning properly and have the correct volume of blood clearance capability. TCV provides information about the dialyzer's efficiency in removing toxins from the blood, which is critical for effective dialysis treatment. When new dialyzers are introduced, verifying their characteristics through such tests guarantees that they meet the required standards for patient safety and treatment efficacy. Ensuring that the dialyzer is functioning optimally protects against potential complications during the dialysis process, which could arise from using a faulty or improperly functioning device. The other tests, while relevant in different contexts, do not specifically verify the quality and readiness of new dialyzers for immediate use. Blood type compatibility is crucial for transfusions but is not applicable to dialyzer function. Serum creatinine levels and electrolyte panels are important for assessing patient status and monitoring treatment, but they do not relate to the performance of the dialyzer itself. Therefore, the TCV test is uniquely positioned as the necessary evaluation to conduct before using new dialyzers.