trustme.bro/r/…
✓ checked
trust me, bro:
here is the receipt.
the claim
Pulse oximetry works by measuring light absorption through tissue
the verdict
SUPPORTED
the evidence backs this
refutedsupported
the weight of evidence
4 sources for · 0 against

Pulse oximetry functions by passing light through living tissue and measuring its absorption to determine blood oxygen saturation levels.

Evidence for · 4
Noncontact simultaneous dual wavelength photoplethysmography: A further step toward noncontact pulse oximetry
2007 · cited by 172
The study outlines how illuminating a region of tissue with multiple wavelengths of light and detecting backscattered photons forms the basis of pulse oximetry.
See more details
The analysis

The claim is a specific, well-established factual description of how pulse oximeters operate via optical absorption through tissue (photoplethysmography). Multiple retrieved papers explicitly affirm this working principle, with none refuting it. Therefore, the verdict is SUPPORTED.

More for · 3
Pulse Oximetry: The Working Principle, Signal Formation, and Applications.
2022 · cited by 25
The chapter details how pulse oximeters record light absorption in a medium to form photoplethysmography signals for estimating blood oxygen saturation.
Melanin bias in pulse oximetry explained by light source spectral bandwidth.
2024 · cited by 22
The study confirms that pulse oximetry uses noninvasive optical measurements of light transmission through vascularized living tissue.
Electronic Module for Photoplethysmography аnd Pulse Oximetry
2018 · cited by 2
The research describes an electronic module that measures pulsating and non-pulsating components of optical density in tissue using the red and infrared spectrum.
The paper trail · every fact has a biography
first checked04 Aug 2026
judged → SUPPORTED · 8904 Aug 2026
This receipt carries no identity, shared or not. Sharing publishes your connection to it, not your data.
Check your own claim
Challenge the receipt
trust me, bro: win the argument, pass the class, survive peer review.
This receipt is an automated verdict against our published method · not an opinion about any author or publication.
Terms · Privacy · How verdicts work · Dispute this receipt