PMID: 22582505May 16, 2012Paper

Quantity and quality assessment of DNA extracted from saliva and blood

Clinical Laboratory
Mee-Lee LooiRahman Jamal

Abstract

Saliva has been suggested as an attractive resource for evaluating physiological and pathological conditions in humans. This study aims to evaluate saliva sampling as an alternative to blood sampling for molecular testing. We compared the yield, purity, and performance of DNA isolated from blood to that isolated from saliva using the non-invasive collection kit (Oragene DNA OG500 and OG575 kit). Saliva DNA was extracted by manual purification and QIAamp DNA mini kit. Blood DNA was isolated by salt-precipitation and DNAzol reagent. We also evaluated the quality of saliva DNA by PCR-based analysis. We found that the DNA yield from saliva (7.8 microg/0.5 mL saliva sample) from the manual purification method was comparable to the DNA yield from blood by the salt precipitation method (7.4 ug/0.5 mL blood sample). DNA extracted from saliva and blood were both of high purity (A260/280 > 1.70). Genotype results (PCR-RFLP and direct sequencing) for all sets of blood-saliva DNA samples were in 100% concordance. Saliva samples, when extracted by the manual purification method, provide a similar amount of human DNA as compared to the amount obtained from blood. Saliva is a viable alternative DNA source for genotyping studies.

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.

Related Papers

Australian Dental Journal
P R L'Estrange, J Benevius
Journal of Clinical Chemistry and Clinical Biochemistry. Zeitschrift Für Klinische Chemie Und Klinische Biochemie
R Haeckel
The Alabama Journal of Medical Sciences
C W Mayhall
Lancet
D J GoldbergE A Follett
© 2021 Meta ULC. All rights reserved