Coronavirus testing lastly collects speed

The level of sensitivity of such antigen-based fast tests is about two orders of magnitude lower than that of a PCR test (1,000 viral copies per ml for PCR compared with 10,000 copies per ml for LFA), even so, repeated quick testing of all, they argue, could do a better job at recognizing contagious individuals than trusted but cumbersome PCR tests.

In contrast to antigen tests, fast tests that pick up on the existence of antibodies are of little worth in catching active infections in a specific, provided the lag between the start of an infection and the introduction of a detectable antibody reaction to it. Since antigen tests have lower specificity than PCR tests, they can generate high levels of false positives in low-prevalence settings, when a person’s possibility of infection and a test’s incorrect favorable rate are numerically similar.

Table 1. Picked fast tests for COVID-19

Developer	Test	Description	Status
Abbott	BinaxNOW COVID-19 Ag Card POC SARS-CoV-2 test	Fifteen-minute LFA antigen test and accompanying app that supplies a short-term digital pass to users who check negative	FDA EUA granted for use in care settings operating under a CLIA Certificate of Waiver, Certificate of Compliance or Certificate of Accreditation
Gain Access To Bio	CareStart COVID-19 Antigen Test	Ten-minute LFA	EUA, CE Mark granted
ArcDia (Turku, Finland)	mariPOC COVID-19 antigen test	Twenty-minute POC test for primary care centers; available as a single test or as part of a multianalyte panel of respiratory viruses; samples are processed and examined on a benchtop gadget	CE mark approved
Becton Dickinson	BD Veritor System	Fifteen-minute POC chromatographic antigen immunoassay continued reading a desktop analyzer	EUA granted
Celltrion Healthcare (Incheon, South Korea)	Sampinute COVID-19 antigen MIA	Ten-minute electrochemical sandwich immunoassay for use in laboratories CLIA-certified to perform high- or medium-complexity tests; requires desktop analyzer	EUA given
Hint Health	Cue COVID-19	Twenty-minute laboratory or POC PCR test employing LIGHT of viral nucleic acid; single-use cartridges are examined in a compact device and results are sent by an app	EUA given
Ellume	COVID-19 antigen test	Fifteen-minute digital fluorescent immunoassay; different single-use cartridges are in development for POC or laboratory settings and for home usage in conjunction with a Bluetooth-connected analyzer for transmission of results and issuance of a digital certificate through the user’s phone	RADx moneyed
Luminostics	Clip COVID Rapid Antigen Test	Immunoassay using bright nanomaterials and smartphone-based readout; for POC use initially, to be followed by an at-home test	RADx funded; fourth-quarter 2020 launch planned
LumiraDx (London)	SARS-CoV-2 Ag Test	Twelve-minute POC microfluidic immunofluorescence antigen test	EUA, CE mark granted
Maxim Biomedical	Maxim SARS-CoV-2 Rapid Antigen Diagnostic Test	Fifteen-minute single-tube LFA	RADx moneyed
MicroGEM	COVID-19 saliva test	Fifteen-minute PCR-based POC and at-home test that identifies SARS-CoV-2 and influenza A and B nucleic acids	RADx funded
Quidel	Sofia 2 SARS Antigen Fluorescent Immunoassay	LFA	EUA approved
SD Biosensor	REQUIREMENT Q COVID-19 Ag Test	Chromatographic immunoassay that provides lead to 15–30 minutes	Eligible for worldwide procurement under WHO Emergency Usage Listing procedure
Ubiquitome (Auckland, New Zealand)	Liberty16 mobile PCR test	Battery-operated mobile PCR gadget suitable for remote hospitals; it provides lead to 40 minutes and reports information through an iPhone app	RADx moneyed
Visby Medical	COVID-19 Personal PCR test	Non Reusable 30- minute PCR test	RADx funded; EUA approved for moderate-complexity labs