Overview

• The skin-applied sticker triggers an immediate red color change when it encounters GHB at levels as low as 0.01 μg/mL.
• In practice, wearers dip a fingertip into a drink and touch the sticker to capture a drop, with positive signals preserved for up to 30 days.
• A newly formed South Korean venture is moving toward a commercial launch of the inexpensive, easy-to-manufacture sensor.
• Laboratory validation demonstrates rapid response and high sensitivity but highlights the need for broader reliability trials.
• Researchers aim to develop additional chemical receptors to adapt the tattoo platform to detect other date-rape drugs.