Ultrasound Gel? This conductive gel ensures a smooth connection between your skin and the ultrasound transducer, so the soundwaves can travel between the probe and your organs. Safe, non irritating, Medline Sterile Lubricating Jelly 4 Oz Clear Box Of 12 Bottles Office Depot Ultrasound Gel Alternative HR Sterile Lubricating Jelly 4oz Tubes (12 Pack Box), Water Soluble Medical Grade Lube HR Lubricant 4oz Tube Ultrasound gel must be used when doing ultrasound on Chegg.com