Three American school girls have made it their mission to provide people with an easy and effective way to tell if their drink has been spiked.

Susana Cappello, Carolina Biagorri and Victoria Roca, who all attend the same Miami high-school, have just invented a straw which can test your drink on the spot.

The 'Smart Straws' will be able to detect the presence of GBH and ketamine, two of the most commonly used date rape drugs.

Speaking to A Plus, Susana revealed the inspiration behind the project:

"Rapes assisted by drugs or alcohol are all too common. We just want to give any gender a simple tool to protect themselves."

As part of their research, the students carried out a survey at Northwestern University.

The results revealed that around 50 per cent of the participants said they knew someone who had been drugged at a party, and 85 per cent said they would be interested in using the drug-detection product.

The trio are currently in talks with a testing kit manufacturer, and plan to begin a crowd-funding campaign to raise the funds needed to start the project.

Of course, this is not the first project of its kind. Previously, a drug-testing nail polish was deemed to be the next big thing, but unfortunately developers have not been able to get it off the ground.

Although the straws will only be able to test for the presence of two drugs, these girls are definitely heading in the right direction.

If they are capable of developing such a sophisticated product in high-school, just imagine what developments could be made in the future.