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Category: Saliva

Posted on October 23, 2020

Coronavirus: Two rapid tests developed by Indian labs show why funding for R&D should increase

While the low sensitivity of rapid antigen tests arises from not isolating the viral RNA from the swab samples and amplification of the DNA before detection, the two indigenously developed tests follow these two vital steps, the reason why the sensitivity and specificity are far superior than that of the rapid antigen tests.

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Posted on August 19, 2020August 19, 2020

COVID-19: Saliva is a viable alternative to nasopharyngeal specimen in asymptomatic persons

In a mass-screening study of 1,924 asymptomatic persons, self-collected saliva samples had sensitivity (92%) and specificity (over 99.9%) comparable to nasopharyngeal specimens — sensitivity 86% and specificity over 99.9%. The…

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Posted on August 18, 2020August 18, 2020

With over 900 COVID-19 deaths per day for over a week, India crosses 50,000 toll

If speed, low cost and constraints of molecular testing capacity are the reasons why many States have embraced rapid antigen testing, the test has low sensitivity. Yale University’s saliva test,…

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Posted on August 16, 2020August 16, 2020

FDA approves rapid, inexpensive saliva test for coronavirus

A rapid, inexpensive saliva test developed by Yale School of Public Health in partnership with NBA has high sensitivity. The testing protocol has been made available through “open source”. The…

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Posted on July 4, 2020

Detecting RNA virus in saliva samples using Raman Spectroscopy

Researchers at the Mumbai-based Tata Memorial Centre have used Raman Spectroscopy to detect RNA viruses present in saliva samples. It is a proof-of-concept study to analyse non-infectious RNA viruses using…

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Posted on February 13, 2020

Coronavirus: Saliva of COVID-19 patients contain virus, study finds

The novel coronavirus SARS-CoV-2 can also be present in saliva, according to a study carried out on 12 patients admitted in hospitals. The presence of live virus in saliva was…

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Posted on July 7, 2016July 7, 2016

Infectious Zika virus found in saliva and urine

If researchers had earlier reported the presence of Zika virus in urine and saliva samples (besides semen, blood and breast milk), a new study has been able to find infectious…

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