Final answer:
For any test requiring special preparation, consult the test protocol or instructions, which will guide you on using the test card, patient serum sample, and reagent for accurate results.
Step-by-step explanation:
When you have a test ordered that requires special preparation, always look in the test protocol or instructions provided with the test kit. This will ensure you are aware of all the necessary steps and materials needed. To perform the test, you will need to obtain a test card, one patient serum sample, and a bottle of test reagent (a suspension of horse erythrocytes) from your instructor. Carefully following the protocol is crucial for obtaining accurate results.