The whole world continues to fight to stop the coronavirus and that the number of infected people continues to accelerate, especially in the united states, which accounts for more than 22%. However, as repeatedly affirmed by authorities across the world, the real number of those infected by coronavirus is lower than the real number. The test is similar to the one that is being carried out right now in the sanitary spaces.
The pharmaceutical company Roche was one of the test developers with a capacity of 96 results in just three hours as the product analyzed nucleic acids extracted from the patient's saliva or mucus. In China and Italy, initial tests were able to produce positive or negative results for coronavirus in less than half based on an the analysis of a drop of blood from the patient.
Certain countries like Afghanistan and even India lag behind the number of tests to be conducted, and increasing the number of tests will allow reaching a greater number of potential infected in a much shorter time frame and act in a more effective way to not overflowing the health system.
How Many Types of Coronavirus Tests are Available?
The two primary types of coronavirus tests examine the samples for a current or past infection.
Tests for Current Infection
Healthcare facilities inquire a sample of saliva (spit) or mucus to find pieces of the virus and check if someone is infected with the coronavirus. These tests can tell if the person is infected on the day of the test.
Individuals receive a container to spit or cough into or use a long swab (like a Q-tip) for sampling from inside the nose (the start, middle, or the back of the nose), throat, interior of the cheeks, the gum or tongue surface.
People can undergo coronavirus tests in a physician's office or other testing places (such as pharmacies or pop-up sites), while some areas extend drive-thru testing, letting people stay in their vehicle during the test. Still, people can conduct the swabbing procedure according to the healthcare team's directions at some testing sites. And there are special kits that allow families to complete it at the comfort of their homes.
Depending on the type of test and the context, results can be available on the same day or take up to a week if the test was submitted to a lab as in the case of home kits. Results might take longer if a community carries out multiple tests simultaneously.
A "positive" test means a person is infected with coronavirus, and a "negative" test means they aren't infected. But sometimes the test results are not accurate. A test result can be negative even when someone has the virus necessitating a second test, while the test may be rarely positive in someone who doesn't have the virus.
Inaccurate test results are more probable when someone is tested at a very early stage of their infection, while this is less to if a person that contracted coronavirus receives it a few days after the infection or symptoms.
Tests for Past Infection
Healthcare facilities run assays on antibodies that are generated by the body after an infection to discern if someone contracted coronavirus in the past. The test can indicate if someone had an infection at least 2–3 weeks before the test as the body takes this much time to generate antibodies after contraction. However, the differentiator is that it cannot tell if the person was infected at the test time, and it cannot be used for coronavirus diagnostic purposes. This blood test, whereby a sample is taken either from a vein or a fingertip (called a "fingerstick"), can yield results on the same day or up to a week later.
Someone with a positive test means they are infected and contagious and must stay home (refer to quarantine vs isolation) to prevent the virus from spreading to others.