Carnett’s sign attempts to distinguish abdominal wall pain from intra-abdominal pathology. The examiner identifies the area of tenderness. The patient is then asked to tense their abdominal muscles, typically by lifting the head or raising the legs. A positive test occurs when the pain remains the same or increases, indicating that the source of pain is in the abdominal wall. A negative test occurs when the pain decreases during muscle contraction, suggesting the pain originates from an intra-ab