Reflex should produce forearm flexion. Tests C5,C6 level function 2. Tester holds subject's forearm and strikes the back of the elbow just above the olecranon process. Reflex should produce forearm extension. Tests C7,C8 function 3.
Tester drags handle of reflex handle across the abdomen laterally from the midline.
Reflex produces contraction of the abdominal muscles. Above the umbilicus tests T8-T10 level function. Below the umbilicus tests T10-T12 level function. Subject sits with legs dangling from the edge of a table. Reflex produces leg extension.