Precipitin Test. By: Khizra Younis Brittany Aldarondo Alejandro Reyes Kevin Mac. Precipitin Test: How it is used . The Precipitin test is used to help distinguish human blood from a possible animal blood.
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The Precipitin test is used to help distinguish human blood from a possible animal blood.
Every creature creates protein and if another type of protein is introduced in the system then the creature’s body will not accept the proteins.
The body will create antibodies for the foreign proteins, investors take these antibodies out.
The serum taken will have the antibodies that react to human antigen when human blood is added to the serum.
When the human blood is added to that serum then it will precipitate if the blood is actually human.
The precipitin test is sensitive and will work on small traces of blood.
It determines whether the blood is from a human or animal.
It is easy to tell if it originated from a human from the results.
It takes about 24-48 hours
The precipitin requires antisera which is found in rabbits.
Humans have different size veins meaning that it can be difficult drawing blood.
The conditions that the test undergo are precise from the temperature of the reaction and the timing.
There has to be an optimal concentration of both antigen and antibody.