Recently, the outbreak of the coronavirus disease 2019 (COVID-19), caused by the SARS-CoV-2 virus, in China and its subsequent spread across the world has caused numerous infections and deaths and disrupted normal social activity. Presently, various techniques are used for the diagnosis of SARS-CoV-2 infection, with various advantages and weaknesses to each. In this paper, we summarize promising methods, such as reverse transcription-polymerase chain reaction (RT-PCR), serological testing, point-of-care testing, smartphone surveillance of infectious diseases, nanotechnology-based approaches, biosensors, amplicon-based metagenomic sequencing, smartphone, and wastewater-based epidemiology (WBE) that can also be utilized for the detection of SARS-CoV-2. In addition, we discuss principles, advantages, and disadvantages of these detection methods, and highlight the potential methods for the development of additional techniques and products for early and fast detection of SARS-CoV-2.

Chronic kidney disease (CKD) is a dilapidating problem that causes great global burden since the current therapeutic options are mostly ineffective. Early diagnosis and efficient treatment are essential to prevent the progression of CKD. Nanoparticles as technological drivers of innovation have emerged in biomedical studies for different theranostic applications. Several nanoparticles have been developed, which can be labeled with targeting moieties for both drug delivery and/or imaging systems and are investigated to detect different pathological conditions. The focus of this review is to demonstrate the current research and clinical applications for nanoparticles in the diagnosis of CKD and other renal diseases that will probably result in CKD.