"Transit Time Measurement"
20 Jul 2014 • ddc.musc.eduSounds like a new feature of Google Maps or Android Wear, but no:
A transit time X-ray measures the time it takes for food to go through the colon. The person takes special capsules by mouth twice a day for five days. Each capsule has twelve X-ray markers. Each day, the person takes a total of twenty-four markers. This averages out to one every hour.
On the sixth day, an X-ray of the abdomen is taken and we count the number of markers left in the person’s colon. This tells about how long it takes for food to go through the colon. If there are eighty-six markers, it takes eighty-six hours. If there are only twenty-four markers, it takes twenty-four hours.
The things I learn about health from talking to my sister…