Table 1.

Biomarkers and their descriptions.

Biomarkers	Descriptions
Clinical biomarkers	Recently, a method for identifying serious cases among COVID-19 patients that is routinely used in hospitals has been introduced, reviewed, and analyzed [52]. Important variations in serum direct cholinesterase, bilirubin & concentration of lactate dehydrogenase (p 0.05) have also been identified between moderate and mild COVID-19 patients. As a consequence of this, determining the severity of the disease by the use of these serum markers is essential for bringing the death rate down.
Inflammatory	They have likewise been connected to the reality of the illness. The levels of all incendiary markers estimated were essentially higher in genuine patients contrasted with non-genuine cases in a methodical report [53]. Moreover, it affirms that higher IL-6 levels are connected to higher death rates. PCT esteems likewise connected to an almost 5-crease expanded danger of being outrageous. This threat is supposed to be expanded in outrageous Coronavirus cases [54].
Immune defending cells	They are a portion of the primary human cells to respond to the SARS-CoV-2 assault. In a new report, each of the 20 Coronavirus patient members created CD4 Lymphocytes & antibodies IgG and IgA focusing on the viral S-protein, with 70% of cases delivering discernible CD8 Immune system microorganisms [55]. These discoveries show that the human invulnerable framework is fit for mounting a huge and durable reaction to the novel COVID-19. Lymphopenia has additionally been found in Coronavirus patients, with lower levels of CD4 and CD8 immune system microorganisms in outrageous cases contrasted with moderate cases, albeit these levels were reestablished once the viral contamination was taken out [6, 56].
Age	Coronavirus seriousness is altogether affected by age. Nonetheless, previous elements (counting diabetes, coronary illness, kidney infection, hypertension, overweight, and way of life) are identified with a higher danger of death. This wonder recommends that for Coronavirus, organic age (the presence of one's body) is similarly pretty much as fundamental as sequential age (the number of living years). Organic age is controlled by hereditary qualities, way of life propensities, medical issues, and harmful openings (microorganisms or synthetics). The epigenetic clock & the glycan clock are two of the most compelling biomarkers of the natural periods. Since IgG glycosylation is related to both ordered and natural ages, glycan timekeepers, which are associated with an unfortunate way of life markers, might be valuable apparatuses for biomarker disclosure [57].