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Blood Typing 8th graders 

by Dr. Carla Mendes

The eight grades students were invited to take part in an interactive ABO blood typing experience in the Science laboratory on March 18th. The objectives of this activity were to demonstrate how an individual’s blood and Rh group is determined, understand basic concepts in serology, and encourage further discussions on safe transfusions.

Seventeen students volunteered for this practice. The most common blood types were O+ and A+ (35% each), corroborating with the most frequent blood types found in Brazil (O+: 36% and A+: 34%) and the US (O+: 37% and A+: 36%) (Blood Type Distribution By Country, 2012). No blood group AB or O- were determined in our samples. The second most frequent blood group was B+ (18%) while blood groups A- and B- accounted for 6% of our results. 

If blood transfusions were needed, all six students with blood type O+ would be able to donate to everyone else except Zeno and Cosenza due to their negative Rh (Rhesus factor). Every O+ could only receive safe transfusions from each other while Zeno and Cosenza could only receive blood from someone with their very same blood type (Rh-). However, both students are entitled to safely transfuse blood to their respective blood groups, A and B. Students with blood group A+ can only exchange blood among themselves. The same is true for B+ students.

Blood Type                            Volunteer’s Name

 

A+                   Arnaldo, Nicole, Teo Bertin, Maria Eduarda,                                Matheus Assunção and Lucca Biondo

A-                    Zeno Camera

B+                   Daniela Ventura, Thais de Souza and Salomé

B-                    Mateus Cosenza

O+                   Maria Clara de Araújo, Juliana de Souza,

                        Pedro Chames, Pedro Silva,

                        Maria Paula Avila and Pedro Arthur de Laport

Percentage of blood groups in the 8th grade

Source

Blood Type Distribution By Country (2012). Retrieved March 26, 2015, from http://en.wikipedia.org/wiki/Blood_type_distribution_by_country

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