A short transcript excerpt from a YouTube video by Robert Whitfield MD describing limitations of traditional culture-based methods for detecting biofilm on implants and advocating PCR (DNA-based) testing as a more sensitive alternative after a negative culture result. The speaker contrasts Q-tip/agar plate cultures with PCR, referencing familiarity from COVID-19 testing.
This is a biofilm. And we'll explain what biofilm is shortly. So I sent them off. And traditional techniques for everybody listening, it's like taking a Q tip and wiping it around in the pocket or on the surface of the implant and sending it off. They put it in a. What's called an auger plate, rub it around and incubate it. That's been done, you know, forever. That's always been the standard. And it came back and said there was absolutely nothing on this implant. And I was like, oh, my gosh, that's completely. Now I'm really aggravated because I went out. I know there's a problem. I went out and told her spouse. I'm like, she's gonna be fine. As soon as I figure out what this is, we'll treat it and be fine. Because of that experience, we switched to what's called that. Everybody knows this from the pandemic, a PCR test. So in the pandemic, you get an antigen test, or you can take PCR tests. PCR tests, it's based on DNA fragments, so it'll tell you exactly what's there.
