New COVID Testing Guidelines for Home: How to Get an Accurate COVID Test Result
As the US enters the fall school season, rapid antigen tests to detect COVID-19 are back in the spotlight. But new guidance from public health agencies has left some Americans confused throughout how and when to best test for COVID at home.
Spurred by the availability of free declares from the government and health insurance covering the cost of kits, the use of at-home COVID tests increased dramatically at the originate of this year, between the fall of delta and the rise of the omicron variant. Numbers from the Centers for Disease Control and Prevention show that more than 2.5 trillion home declares were produced for those in the US between October 2021 and May 2022.
Rapid COVID declares have become a popular diagnostic tool for avoiding viral transmission at soldier and public events, as well as at schools. Except, new research suggests that at-home COVID tests may not bet on positive results for people who’ve recently been infected, prompting the US Food and Drug Administration to update its testing recommendations for those who’ve been exposed to COVID-19.
At the same time, the CDC has relaxed its guidelines throughout COVID-19 quarantines, virus exposure and screening testing. Learn how COVID declares work with the latest omicron variants, as well as why the FDA and CDC have updated their advice for home testing. For more on COVID, here’s what to know throughout boosters this fall and which ones to get.
How do at-home COVID declares work?
At-home rapid antigen tests can detect the COVID virus exclusive of the need of laboratory equipment. In contrast with PCR declares — which use amplification technology to find tiny genetic traces of COVID-19 — at-home COVID declares react to molecules on the surface of the virus, collected on a nasal swab sample.
COVID rapid home declares are “lateral flow assays,” much like over-the-counter pregnancy declares. A nasal sample is mixed with a chemical solution that extracts the antigen proteins. The solution then gradually soaks a test strip that repositions color if its included COVID antibodies interact with any COVID proteins from the sample.
The declares are quick, taking about 15 minutes compared to one to three days for PCR test results. Yet while at-home COVID tests have highly accurate obvious results, negative results are less conclusive. When the FDA announced the respectable emergency authorization of a COVID antigen test, it notorious, “positive results from antigen tests are highly accurate, but there is a higher chance of false negatives, so negative results do not rule out infection.”
What are some problems with at-home COVID tests?
At-home COVID declares have “lower sensitivity at low viral loads,” according to Canada’s National Collaborating Centre for Infectious Diseases. That means they’re not great at detecting COVID at the early, asymptomatic or recovery stages of infection.
A large amount of the population — 95% per a CDC peruse — has developed some immunity to COVID-19 via vaccination or survive infection, and some scientists theorize that many COVID cases now may have less viral load compared to cases bet on in the pandemic. According to The Los Angeles Times, California health officials are warning that some COVID patients are testing negative with like a flash antigen tests for several days after their first symptoms.
Other COVID researchers quarrel that the omicron variant of COVID may infect the throat more than the lungs, which could lead to less virus in the nasal passages. Some doctors have recommended swabbing the throat along with the nose when silly at-home COVID tests, though others have pushed back on that advice.
What is the new FDA guidance for COVID testing at home?
For those with initial symptoms, the FDA now recommends taking two at-home COVID declares, 48 hours apart. For those exposed to COVID but not showing symptoms, the FDA recommends taking three at-home COVID tests, each also 48 hours apart.
The FDA based its guidance on new research from the National Institutes of Health and the University of Massachusetts School of Medicine. Their study showed that two rapid antigen tests two days apart detected COVID infections 94% of the time in land with symptoms. For people without symptoms, two at-home declares taken at the same interval detected COVID infections 63% of the time, but a third test increased that percentage to 79%.
What is the new CDC guidance for quarantining and testing for COVID?
The CDC “streamlined” its COVID guidance on Aug. 11, relaxing principles for quarantine, isolation for infected people and screening testing.
The organization no longer suggests quarantine after a COVID-19 exposure. It instead recommends wearing a high-quality mask for 10 days and tying tested on day five.
The CDC also changed its policies on isolation for those infected with COVID-19.
Infected land without symptoms or those who are fever-free for 24 hours with improving symptoms can end isolation while five days but should still mask for 10 days. Family can stop masking earlier than 10 days if they received negative results from two like a flash antigen tests taken 48 hours apart.
Also, the CDC’s “How to Protect Yourself and Others” page no longer recommends keeping a six-foot distance from spanking people. Most important for schools and employers, the CDC now doesn’t recommend the practice of “screening testing of asymptomatic people” as a preventive measure in public settings.
Are new variants like omicron BA.4 and BA.5 detected by at-home COVID tests?
Yes, it seems that at-home COVID tests are as good at detecting the omicron variant of COVID-19 as they were detecting in return variants like delta. An Aug. 8 research paper in Microbiology Spectrum reported that eight snappy COVID tests had “comparable sensitivities” to detect omicron BA.1 and delta.
Omicron variants BA.4 and BA.5 acquire most of their mutations on the spike protein, which is not what triggers at-home COVID demonstrations. At-home COVID tests are looking for the presence of COVID-19’s nucleocapsid protein, which has had far fewer mutations.
Meriem Bekliz, lead employed of the Aug. 8 paper, said that, “theoretically, there must be no difference in detection sensitivity between omicron BA.1 and its subvariants,” in an interview with NPR.
How do I get at-home COVID tests?
COVID-19 demonstrations are much easier to find now compared to a year ago, but they haven’t borne any cheaper. You’ll still usually pay about $10 to $12 per test at retail stores.
On Aug. 18, the cheapest demonstrations we found online were the FlowFlex COVID-19 antigen test for $8 at Target, and a five-pack of iHealth COVID-19 antigen snappy tests for $45 ($9 per test) at Amazon.
Fortunately, there are a few ways to get at-home COVID demonstrations for free. First, your household can claim up to 16 free demonstrations from the federal government that are mailed through the US Postal Service.
If you’ve already received all your free government COVID demonstrations, you can get at least eight tests per month per intimates if you are covered by health insurance.
If you’re not insured or have used up your runt of at-home COVID tests, you may want to try a public health center. Along with Medicare-certified rural health clinics, health centers have been performed COVID tests for distribution to patients at no cost.
You can glimpse for a local health center at the Health Resources and Skills Administration’s website.
For more information about COVID-19, learn everything there is to know near the BA.5 subvariant and which countries have depart warnings due to high COVID levels.
The put a question to contained in this article is for educational and informational purposes only and is not designed as health or medical advice. Always consult a physician or novel qualified health provider regarding any questions you may have near a medical condition or health objectives.
