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Assay Techniques and Test Development for COVID-19 Diagnosis

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TLDR
An ongoing theme of the COVID-19 pandemic is the need for widespread availability of accurate and efficient diagnostic testing for detection of SARS-CoV-2 and antiviral antibodies in infected indiv...
Abstract
An ongoing theme of the COVID-19 pandemic is the need for widespread availability of accurate and efficient diagnostic testing for detection of SARS-CoV-2 and antiviral antibodies in infected indiv...

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Citations
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Selective Naked-Eye Detection of SARS-CoV-2 Mediated by N Gene Targeted Antisense Oligonucleotide Capped Plasmonic Nanoparticles.

TL;DR: A colorimetric assay based on gold nanoparticles (AuNPs), when capped with suitably designed thiol-modified antisense oligonucleotides (ASOs) specific for N-gene (nucleocapsid phosphoprotein) of SARS-CoV-2, could be used for diagnosing positive COVID-19 cases within 10 min from the isolated RNA samples.
Journal ArticleDOI

The COVID-19 pandemic

TL;DR: The available therapies to fight CO VID-19, the development of vaccines, the role of artificial intelligence in the management of the pandemic and limiting the spread of the virus, the impact of the COVID-19 epidemic on the authors' lifestyle, and preparation for a possible second wave are provided.
Journal ArticleDOI

Systematic review with meta-analysis of the accuracy of diagnostic tests for COVID-19.

TL;DR: RT-PCR remains the gold standard for the diagnosis of COVID-19 in sputum samples and the combination of different diagnostic tests is highly recommended to achieve adequate sensitivity and specificity.
Journal ArticleDOI

Rapid, Ultrasensitive, and Quantitative Detection of SARS-CoV-2 Using Antisense Oligonucleotides Directed Electrochemical Biosensor Chip.

TL;DR: The development of a rapid (less than 5 min), low-cost, easy-to-implement, and quantitative paper-based electrochemical sensor chip to enable the digital detection of SARS-CoV-2 genetic material is reported.
References
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Journal ArticleDOI

Loop-mediated isothermal amplification of DNA

TL;DR: A novel method that amplifies DNA with high specificity, efficiency and rapidity under isothermal conditions that employs a DNA polymerase and a set of four specially designed primers that recognize a total of six distinct sequences on the target DNA.
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SARS-CoV-2 Viral Load in Upper Respiratory Specimens of Infected Patients.

TL;DR: Results of an analysis of nasal and throat swabs from 17 patients in Zhuhai, China, who had received a diagnosis of Covid-19 and found SARS-CoV-2 Viral Load in Upper Respiratory Specimens positive.
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Estimating the asymptomatic proportion of coronavirus disease 2019 (COVID-19) cases on board the Diamond Princess cruise ship, Yokohama, Japan, 2020.

TL;DR: On 5 February 2020, in Yokohama, Japan, a cruise ship hosting 3,711 people underwent a 2-week quarantine after a former passenger was found with COVID-19 post-disembarking, and the delay-adjusted asymptomatic proportion of infections, along with the infections’ timeline were derived.
Journal ArticleDOI

Real-time PCR for mRNA quantitation.

TL;DR: This review discusses the key components of a real-time PCR experiment, including one-step or two-step PCR, absolute versus relative quantitation, mathematical models available for Relative quantitation and amplification efficiency calculations, types of normalization or data correction, and detection chemistries.
Journal ArticleDOI

CRISPR-Cas12-based detection of SARS-CoV-2.

TL;DR: The CRISPR-based DETECTR assay provides a visual and faster alternative to the US Centers for Disease Control and Prevention SARS-CoV-2 real-time RT–PCR assay, with 95% positive predictive agreement and 100% negative predictive agreement.
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