With this paper you can know your blood group in a few seconds

It takes between 10 and 20 minutes to verify the type of blood we have (A, B, AB or O), not including the time it takes to transport the blood to a laboratory.

However, a paper test that identifies the blood group con just a few drops of blood and in a few seconds It has been developed by scientists from the Third Military Medical University in Chongqing (China).

Blood test

The green tint of bromocreosol (basically a dye that interacts with blood) has been included in a test strip with antibodies that recognized different blood type markers, the antigens. The paper strip appeared in bluish green if an antigen from a particular blood group was in the sample and in brown if it was not.

The color change occurs in 30 seconds and looks like a thermometer. The researchers analyzed 3,550 blood samples and had an accuracy rate of 99.9%. The study has been published in the journal Science Translational Medicine.

Video: New paper-based test can determine blood type in seconds (February 2020).