Interactive film · HTML5 interactive video + trailer
Can one blood test find cancer early?
A 10-minute interactive video on multi-cancer early detection (MCED) blood tests, with a 60-second trailer. It explains the five signals these tests read, why a signal is not a diagnosis, what positive predictive value means, and what should happen after a positive result.
NewReviewed
Prefer a bigger screen? Open the player in a new tab. Keyboard: Space play or pause, ← → change scene, C captions.
What this resource covers
- What is in a tube of blood: cell-free DNA, tumour DNA, proteins and rare tumour cells
- Four different jobs for blood tests: screening, early detection, diagnosis and monitoring
- Five signals: methylation, mutations, fragment patterns, proteins and circulating tumour cells
- Positive predictive value with an interactive grid of 10,000 people
- What should happen after a positive result, and why a negative result does not rule cancer out
- Why MCED tests do not replace recommended screening
How to use this resource
- Choose the 60-second trailer or the full video from the tabs at the top of the player.
- Pause on the specificity slider to explore how false alarms change with test accuracy.
- Use the full voice-over script (in the player) for teaching notes or translation.
Accessibility
Captions, keyboard controls, a script panel that follows the narration, and dropdowns for the matching question so it works with screen readers.
