A sterile medium designed to be applied to a patient's skin surface to provide a coupling between an ultrasound transducer and the patient, allowing for the emission and reception of ultrasonic waves that pass through the skin during an ultrasound examination requiring sterile procedure. It is in the form of a non-sticky, drip resistant, fluid-like gel that has been thermally sterilized (contains no degradation products of radiation sterilization) that also assists the operator's ability to move the ultrasound transducer (probe) smoothly over the skin to better scan the site of interest. After application, this device cannot be reused.