| abstract |
An ingestible device includes a sample chamber configured to contain a sample, the sample chamber including a base having an aperture, and a fluorometer communicating with the sample through the sample chamber base The chamber is separated, the fluorometer includes (I) a light source configured to emit excitation light, (II) a light guide configured to direct the excitation light from the light source to the sample, (III) configured to A photodetector that detects emitted light generated by the interaction of the excitation light with the sample. The light detector is configured to receive the emitted light from the sample through the aperture. Additionally, the fluorometer includes (IV) an emission filter between the aperture and the photodetector, the emission filter configured to (i) transmit light incident on the emission filter the emission light, and (ii) block excitation light incident on the emission filter. Additionally, the ingestible device includes a housing that houses the sample chamber and the fluorometer. |