Researchers at the University of Pittsburgh developed a wearable antibody test that gives results in 10 minutes and does not need a blood draw. The sensors detect antibodies for viruses such as SARS-CoV-2 and H1N1 by reading interstitial fluid, the liquid around skin cells.
The team made two sensors with viral antigens attached to carbon nanotubes. A matching antibody changes the nanotube electrical signal. The tiny sensors use only a half volt and measure 2.6 square millimeters. Tests found they are nine orders of magnitude more sensitive than common clinical tests like ELISA. Researchers are also exploring painless microneedle patches to collect fluid and pair with the sensors.
Difficult words
- antibody — A protein made by the body to fight infections.antibodies
- sensor — A device that detects changes or signals.sensors
- detect — To notice or discover something.
- infection — A disease caused by germs or bacteria.infections
- monitor — To watch or check something over time.
- traditional — Related to old methods or customs.
- interstitial — Relating to the space between cells.
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Discussion questions
- How might this technology change health care?
- What do you think about wearable sensors for health?
- Why is it important to avoid traditional blood tests?
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