Advantages of DNA testing from saliva

Researchers at the University of Western Australia recently announced that they have found the superiority of DNA testing from saliva samples compared to DNA testing from blood samples.

The advantage lies in preservation. Previous studies have shown that saliva samples may contain the same amount of DNA as blood samples. However, the problem is how to preserve the test sample for a long time.

To answer this question, Dr. Robert Anthonappa and colleagues collected 10 blood samples and 50 saliva samples from the study participants, separated the DNA as soon as the specimen was taken and at many later times, and The samples are preserved under different conditions.

Test results showed that while blood samples had to be refrigerated and DNA had to be separated within 24 hours, saliva could be stored at 37 ° C for 18 months without decreasing the amount of DNA. .