Purification and extraction of mRNA from saliva samples is a relatively new but promising method in molecular biology research. Saliva samples offer a non-invasive and convenient way to obtain mRNA, which can be used to study gene expression patterns in a wide range of research fields, including disease diagnosis and drug discovery.

One of the benefits of using saliva as a source of mRNA is the potential for repeated non-invasive sampling, which can be advantageous for monitoring gene expression changes over time in response to treatments or disease progression. Additionally, mRNA extracted from saliva may reflect changes in gene expression patterns in tissues throughout the body, providing a snapshot of systemic changes in response to various stimuli.