Deep tendon reflexes (DTRs) are tested using a reflex hammer to strike the tendons at specific points. The main reflexes include the biceps, triceps, brachioradialis, patellar, and Achilles reflexes. Reflexes are graded on a scale from 0 to 4+:
0: No response 1+: Diminished response 2+: Normal response 3+: Brisker than average response 4+: Hyperactive response with clonus
