https://www.freethink.com/health/color-changing-sutures “#SkinpH levels typically hover around 5, but an #infection can cause pH to spike. When it does, Taylor’s color-changing sutures, dyed with #BeetJuice, go from #red to #purple.

“I found that beets changed color at the perfect pH point,” Taylor told Smithsonian, around a pH of 9.

Because changes in pH happen early in infection, Taylor hopes the color-changing sutures can help spot infections early, when antibiotics can treat them, instead of more invasive measures”