Nasal sample collection reOpenTest

5 April, 2021|Categories: Uncategorized|

There is evidence that accurate identification of SARS-CoV-2 virus is affected by the source of the samples. Until now, it was known with certainty that the likelihood of obtaining a more accurate diagnosis was increased by collecting the sample by nasopharyngeal swab compared to nasal or oropharyngeal swabs.   Fig. 1 Differences between nasal swab, nasopharyngeal swab and oropharyngeal swab.   However, sample collection through the nasopharynx does [...]

How to know the immune status after vaccination?

5 March, 2021|Categories: News|

Vaccination against COVID-19 is a crucial part in the fight against the pandemic. Currently, there are different vaccines in this fight, but they all have a common mechanism of action. The vaccine activates the production of specific immunoglobulins against the SARS-CoV-2 virus. Vaccines create antibodies against the Spike protein. But how the effectiveness of a  vaccine is determined? Through the antibodies produced by it. Vaccines stimulate responses that [...]

How effective is the COVID-19 vaccine? Rapid serological tests verify in minutes that vaccines have generated antibodies against the virus.

4 March, 2021|Categories: News|

The vaccine is the most promising measure that is carried out for individual protection and collective protection against COVID-19. Protecting yourself from COVID-19 is crucial because, in some cases, the disease can become seriously complicated and even lead to death. Vaccines against COVID-19 help our body develop immunity against the SARS-CoV-2 virus, without become infected with the disease. The protection provided by the vaccine is based on the [...]

What information does each test give us for COVID-19?

26 February, 2021|Categories: News|

For the detection of the SARS-CoV2 virus, RT-PCR tests have been used since the beginning of the pandemic to determine the genetic material of the virus in the most sensitive way, but they require qualified staff and laboratory instruments, taking several hours or some days to have available post-sampling results when samples need to be transported to a laboratory. On the other hand, rapid antigen and antibody tests [...]

Sample collection. Are saliva tests reliable?

17 February, 2021|Categories: News|

The detection of SARS-CoV-2 is based on the identification of viral RNA from respiratory samples by RT-PCR. Currently, the standard method for the detection of SARS-CoV-2 infection is the one that includes the nasopharyngeal swab, but there are other alternatives (nasal swab, oropharyngeal swab or saliva) whose sensitivity and specificity are under discussion.   Figure 1. Differences between nasal swab, nasopharyngeal swab and oropharyngeal swab.   However, the use [...]

The importance of sensitivity in COVID-19 testing

10 February, 2021|Categories: Awards, News|

The limit of detection of an RT-PCR test is the lowest detectable concentration of viral RNA that gives a positive result (in more than 95% of repeat measurements). A low detection limit indicates a higher analytical sensitivity, which means that the test can detect a positive result from a lower number of viral RNA copies per sample. The greatest benefit of tests with a low limit of detection [...]