Figure - PMC

Skip to main content

An official website of the United States government

Here's how you know

Here's how you know

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

View full-text article in PMC

. 2021 Oct 22;299:114338. doi: 10.1016/j.jviromet.2021.114338

Search in PMC
Search in PubMed
View in NLM Catalog
Add to search

© 2021 The Author(s)

Since January 2020 Elsevier has created a COVID-19 resource centre with free information in English and Mandarin on the novel coronavirus COVID-19. The COVID-19 resource centre is hosted on Elsevier Connect, the company's public news and information website. Elsevier hereby grants permission to make all its COVID-19-related research that is available on the COVID-19 resource centre - including this research content - immediately available in PubMed Central and other publicly funded repositories, such as the WHO COVID database with rights for unrestricted research re-use and analyses in any form or by any means with acknowledgement of the original source. These permissions are granted for free by Elsevier for as long as the COVID-19 resource centre remains active.

PMC Copyright notice

Fig. 3 — Comparison of cycle thresholds in clinical specimens positive for SARS-CoV-2 across Allplex, Alin4Plex, and AlinSARS.

Positive SARS-CoV-2 samples by Allplex were retested with Alin4Plex (n = 20) and AlinSARS (n = 11) and showed concordant positive results (100 % PPA). The mean Ct differences between the assays were 1.0 Ct (mean of Allplex target regions minus Alin4Plex), 4.6 Ct (AlinSARS minus Alin4Plex), and 4.0 Ct (AlinSARS minus mean of Allplex target regions), respectively. The positive samples in the figure are presented in ascending order of Allplex Ct values. Additionally, a set of 19 SARS-CoV-2 negative specimens by Allplex was retested by Alin4Plex confirming all negative results for SARS-CoV-2 (100 % NPA).