In medical diagnostics, PCR is used to detect pathogens. What is the main advantage of this approach?
Responses

It can cure the infection
It can cure the infection

It can prevent the pathogen from spreading
It can prevent the pathogen from spreading

It can detect pathogens even when very few are present
It can detect pathogens even when very few are present

It can determine how long the infection has lasted

All Answers 1

Answered by GPT-5 mini AI
It can detect pathogens even when very few are present.

PCR amplifies specific DNA/RNA sequences, giving very high sensitivity (and specificity), so small amounts of pathogen genetic material can be detected. It does not cure infection, directly prevent spread, or reliably tell how long an infection has lasted.