Antonyms for Inferior Petrosal Sinus Sampling are superlative, top-notch, superior, excellent, and eminent. While IPS sampling is a medical procedure used to diagnose certain diseases related to hormones and the brain, antonyms for it refer to exceptional qualities and excellence. The procedure involves inserting a needle into the inferior petrosal sinus in the brain, while antonyms signify a higher status or a topmost level of excellence. IPS sampling may be necessary for medical diagnosis, but the antonyms indicate excellence and exemplary performance in various aspects of life, such as education, career, or personal achievement.