What blood test are you talking about?
Since I don't have first hand knowledge of the blood test, I called my friend who works in healthcare, and she has been on the front lines since January and asked her to talk me through all this. I asked her about the blood test.
She said basically and the simplest method is a blood test it really is the most accurate way to tell if you actually have the Covid 19 strain of the Corona Virus... Now she did say that the blood test are costly, most of the time there are given in the hospital, or doctors offices are taking blood if they have a patient that has severe health problem and are compromised, and they are wanting to be sure that this is the correct diagnosis, or sending them to the hospital to be tested, she did say that some labs are offering the blood test now - as long as you have insurance.
my moms friend has severe asthma, and complications with her lungs due to smoking for years ( she doesn't smoke now)... and her overall health is very compromised... she did not get the flu shot last year, because she was in the hospital with pneumonia... so her Doc ordered the blood test... to get to the bottom of it right away...and thankfully she was negative.
She said there was something about the cycles of the testing, is different than the normal testing parameters... and that this difference causes the false positives, - and pick up other germs in someone system... she said something like a summer or fall cold... a sinus infection... pneumonia, and strep throat... a stomach bug can all cause the test to show positive...
Here's her explanation - and thoughts and feelings about it. So her response's I am going to list below.
According to her the swab up the nose - picks up Corona Virus... Which has been around forever for basic yearly flu, and are not skewed to just pick up the Corona Virus strain Covid 19...
That's why it was so important to get a yearly flu shot, so that if you did start to show symptoms, they could rule out the normal influenza/yearly flu, right away... so the chance of the test being more accurate are much higher...
The rapid test are in her opinion about 50 to 60 percent accurate - and there are different ones ( meaning different brands at the testing centers) out there at the testing sites... and she said it seems the longer this goes on, the quality of the rapid test is decreasing....pressure to make more and more test to meet the demands, and no quality control on the test being made... again she said not all of them she said that there are some great testing center available, along with some manufactures that are adhering to safe practice's and the quality of the product.
As well in some cases that the person administering the test might not really be qualified to do the test, and following the proper protocol... She said in some instants they are volunteers, or people with little or no knowledge, or maybe work in another area of health care, which doesn't mean they are knowledgeable in the proper protocol...like a phlebotomist administering the test, yes they work in health care, but are they qualified to administer the test? even in some instants they are handing the person there to be tested the swab and they are doing it themselves
( my neighbor did the drive through testing and they handed her the swab to do herself.)...and reading the test or lack of reading the test as also come into play...
a guy who works for my DH, him and his wife went to be tested at a drive thru testing site, and filled out paper work but were never given the test, as they ran out, and were told to come back the next day, which they decide to go to a 2 day site the same day, and both tested negative when they got the results... yet the drive thru site sent them the result of their test and they were positive... which he reported the testing sight to the health department - so how did they get a positive result when they did not even take the test? - even mixing up of the swabs, improper handling....the drive thru sites are overwhelmed, So all this goes into the pot which can cause issue with the correct results being given.
I asked about the seniors who all tested positive she said if they all went to the same testing site, she said that if could be that the testing site has no idea of what they are doing, or that the test kits are compromised, or not being given correctly or read correctly, or a mix of problems, she said that in some cases. She said that they need to call the health department and report the testing site...and she said mostly that a blood test is given only rarely, and that my mom friend might have been exaggerating somewhat... which knowing my moms friend might be the case, now that I think about it...and the other people not wanting to be left out... the whole she got a blood test so I want one to kinda thing.... she said most likely that their Doctors sent them to a hospital or health department run clinic for the 2 day test, she said but if they were willing to pay for the blood test the Doctors might take into consideration, their patients overall health, and level of them being compromised and make a decision to write the order for blood work...to double check and get ahead of it, some could have went to a lab that is offering the blood test.
The 2 day test is what she called it, said it was more accurate she said in her opinion about 80 percent... different environment for running the test.. Again she said that's why it is so important to have gotten your yearly flu shot... it save's time to get the correct treatments going before you become critical ill... even with that some of the test only pick up the corona virus, and are not skewed to pick up just the covid 19 strain of the virus.
Overall she said that if you test positive you should practice all the guidelines, even if you are not showing any symptoms. If you feel it was a false positive that you might want to think about a 2 day test to double check, She said that some people are calling a begging for a blood test so that they can work, or are care giver to elder parents and are willing to pay the cost of the blood test... as well she went on to say if you are seriously compromised, you should call your doctor and speak with them on what steps you should do.
The drive thru centers should not be giving medical advise, and your Physician is the person you should be consulting with on your health practices...
The one thing that she stressed more than anything is getting a yearly flu shot... I assured her that we got our in Sept. of last year 2020.. and that we get one every year... she said it is so important to get this yearly...
Even with the vaccine starting to roll out she said that practicing the guidelines is important until we reach herd immunity, and even then we should not give up or start sliding on hand-washing, hand sanitizers and cleaning wipes to keep the germs away in our homes, work spaces, and especially when traveling and really mask wearing when you are sick, to stop the spread of anything going forward... we have to stay aware...