There are no requirements for this test, no need to fast. Neither is an appointment necessary, blood draws are performed from 8:00h – 10:30h from Monday to Friday.
The results are delivered after 3-4 days.
Viruses are small pieces of RNA or DNA, the vast majority are encapsulated in a protein-based envelope known as a capsid, others protect their genetic material with a membrane or envelope derived from the cell they infect and some others also surround their capsid with a cell membrane.
Viruses have evolved to reproduce within the cell they infect, since they are not capable of doing so by themselves because they lack the necessary molecular machinery.