https://www.selleckchem.com/products/lanraplenib.html The coronavirus disease 2019 (COVID-19) pandemic is still ongoing. Real-time reverse transcription polymerase chain reaction (real-time RT-PCR) is regarded as a gold-standard method for the diagnosis of COVID-19. However, unexpected contamination of synthesized positive control samples included in COVID-19 test kits have increased the inconclusiveness of disease interpretation. Therefore, it is important to establish new methods for the preparation of reliable positive controls that are not affected by contamination for the accurate for diagnosis of COVID-19, but it still remains a challenge. A new approach for producing synthetic positive controls using synthetic positive template (SPT) oligonucleotides was designed. SPT oligonucleotides contain probe binding and virus-irrelevant regions were used as templates for real-time PCR to evaluate the expression level of SARS-CoV-2 genes (RdRP, E, and N). The limit of detection (LOD) for individual SARS-CoV-2 genes by Ct values with different concentrations of Sve control materials. Therefore, this approach could be integrated into the currrently available COVID-19 test kits and will provide a general method for preparing positive controls in the diagnosis of emerging RNA virus infections. Respiratory syncytial virus (RSV) infection is a global public-health problem. Timely diagnostics are needed for high-risk patients. Several methods have been used for RSV detection but not suitable for on-site detection due to the requirement of specialized laboratories and expensive equipment. We developed a convenient, rapid and low-cost method of nucleic acids (NA) extraction based on cellulose paper, which could extract NA from nasopharyngeal swabs (NPSs) within 1min. This extraction method was integrated with fluorescence convection polymerase chain reaction (CPCR), which easily affordable and easy-to-use NA detection of the RSV in 33min. The developed cellulose-based NA purific