Talk about a stinky experiment.

In the name of science, six United Kingdom and Australia-based paediatricians agreed to swallow a Lego head to determine how long it would take for their bodies to pass them.

The health care professionals revealed the results of their study this month in the Journal of Paediatrics and Child Health.

The experiment, they said, was to help parents get a better idea of how long it would likely take their child to pass a small foreign object — such as a coin or Lego piece — as kids are notorious for swallowing things they aren’t supposed to.

Researchers used unique metrics to determine the time it took for the Lego head to pass.

These included the stool hardness, a score for the time it took to pass through the body, as well as the found and retrieved score.

In a separate post, researchers said they used a “variety of techniques” to retrieve the Lego head, ranging from tongue depressors, gloves and even chopsticks. In other words, “no turd was left unturned,” they wrote.

We've finally answered the burning question - how long does it take for an ingested lego head to pass?



THIS is dedication to paediatrics - but it was worth it to advance science and paediatric emergency care.https://t.co/tZ4b9Yo8Kf pic.twitter.com/Nda7rqs7Zl — Tessa Davis (@TessaRDavis) November 23, 2018

By the end, they determined it took roughly one to three days to pass the Lego head, with an average time of 1.7 days.

None of the doctors had complications after ingesting the Lego, though one doctor still hadn’t passed his Lego head after two weeks.

“It is possible that childhood bowel transit time is fundamentally different from adult, but there is little evidence to support this,” the study found.

“If anything, it is likely that objects would pass faster in a more immature gut.”

The group concluded that the results should be “of use to anxious parents who may worry that transit times may be prolonged and potentially painful for their children”.

One of the authors of the report, Grace Leo, told The Guardian parents should remain vigilant and seek medical attention if their child swallows something that is sharp or longer than 5cm, magnets or a button battery.

That said, the researchers hoped their experiment will “reassure parents,” adding they “advocate that no parent should be expected to search through their child’s faeces to prove object retrieval”.

This story originally appeared on Fox News and has been republished here with permission.