Tube cap blood

[Ene10taerre]

Hi guys, sorry for my bad english. I searched the internet for this answer and I didn't find it so I hope someone here can have an idea. I'm from Brazil.

I had a risk about 3 months ago, my risk was unprotected sex so today I went to do a panel for STD, hiv and others. Collection was normal and I'm waiting for the results, the needle was new and the syringe too. What happened was the nurse seemed a little nervous and when it was time to move my blood from the syringe to the blood tube, the tube cap came off and then my blood was in the tube and was it out in the open? Because the tube was uncapped for a few seconds and she capped it back and put it in place.

Won't that harm my sample? Given that the blood has been exposed to air and therefore loses its capabilities?

"blood in contact with the air is not a contaminant" is what you see on the internet.

So my blood was lost? And she didn't ask me to collect it again?

Thanks

[CurfewX]

Blood in contact with air is only relevant related to whether the blood is infectious or not.  The blood being in the air does not destroy the presence of, or ability to detect, antigens and antibodies, which is what the tests are looking for.

[Ene10taerre]

Hi, Curfewx. thanks for the quick reply, i saw that you are in many answers here on the site and i will trust your advice. Why does it happen? In this case, the air only damages the virus and its infectious capacity but does not damage the virus detection capacity? This is very difficult to understand. For if the air damages the virus, how does it preserve the antigen that is part of the virus is coupled to the virus? Well, but I believe this is a passing anxiety. My results just came out:

A VITROS AG/AB - ECLIA test

Non-reactive.

It's been 100 days of my at-risk situation, so I must move on.

[AnxiousNoMore]

This is not a test analysis forum, so you would have to talk to the manufacturer if you want to know the nuts and bolts of how their chemicals interact, however there is no purpose and you don't try to understand how any other test works that your doctor orders.

[Ene10taerre]

You didn't read it well and you are misinterpreting it, I don't want to know how tests work this information is very well defined on the internet. My question was about the possibility that my sample is lost because it was uncapped for a few seconds, 01 minute maybe. If this answer does not exist in a concrete way, just say that there are still no studies for this. My panel came out today with all the test negative. And my concern is that any of the tests that have been done have lost their physical-chemical appeal by the adverse event that occurred. Curfewx says that's not possible, and I just wanted to know why it's not possible if there's some basis for this information, if I don't have to be content with no change or do another test a few days later.

[CurfewX]

There are no published studies because it is WELL KNOWN that exposure to air does not degrade antibodies within the blood.  It really is that simple.

[Ene10taerre]

Okay, that's just what I needed to know. Thank you and a hug from Brazil, come to Carnival in 2022.