Aa
CDC good news
I just read that CDC has changed the hiv window period since 2014! In case you get tested by Elisa 4th generation test, also called combo or duo, the window period is only 3 weeks after expousure.
''No diagnostic test will ever be 100 percent reliable, but if you test negative at the appropriate time (i.e., 3 weeks after possible exposure to the virus with the newer HIV tests-4th generation or 13 weeks after possible exposure to the virus with the older HIV tests), you can consider that to be a dependable confirmation that you are HIV negative.''
You can see this information on the cdc website! I'm from Brazil, and here, all the labs use 4th generation test!
''No diagnostic test will ever be 100 percent reliable, but if you test negative at the appropriate time (i.e., 3 weeks after possible exposure to the virus with the newer HIV tests-4th generation or 13 weeks after possible exposure to the virus with the older HIV tests), you can consider that to be a dependable confirmation that you are HIV negative.''
You can see this information on the cdc website! I'm from Brazil, and here, all the labs use 4th generation test!
The 3rd gen test is good, but I would not trust a 3rd gen test to be conclusive after just 1 month. I understand that there is still 5% of the population that will take longer than that.
And 22 days for a 4th gen test. seems a bit soon also. I'm more familiar with a 28 day test. And in general a few days doesn't' matter, but for HIV tests that early they are statistically significant from the charts I've seen.
These guide lines seem to be good guidelines for when they are most likely to have predictive value.
Be well
And 22 days for a 4th gen test. seems a bit soon also. I'm more familiar with a 28 day test. And in general a few days doesn't' matter, but for HIV tests that early they are statistically significant from the charts I've seen.
These guide lines seem to be good guidelines for when they are most likely to have predictive value.
Be well
Australia, despite the ab ag test being readily available, in the lab notes it will still say that testing should be done in three months time to exclusively out rule infection.....
It's hard to understand why US doens't use the 4th gen test frequently! Here in Brazil we care a lot about health issues and even in public health care they use the last version of 3th gen hiv test! The window period here for the last version of 3th gen is 1 month and 22 days for 4th gen test!
I'm glad brazil only uses 4th gen. I believe the UK is the same way (for lab tests). I think UK still uses 2nd gen rapid tests. Australia, I believe has standardized on 4th gen.
I think the US should standardize on 4th gen. But doctors are free to do whatever they want no matter what the CDC says. And 4th gen machines cost money, so they aren't going to change unless people demand 4th gen tests.
But I'm glad to see that the CDC has formally recommended 4th gen testing.
I think the US should standardize on 4th gen. But doctors are free to do whatever they want no matter what the CDC says. And 4th gen machines cost money, so they aren't going to change unless people demand 4th gen tests.
But I'm glad to see that the CDC has formally recommended 4th gen testing.
CDC link please. We're aware of the new recommendations.
Here's a chart:
http://www.cdc.gov/nchhstp/newsroom/docs/2014/HIV-testing-Labs-Flowchart.pdf
Here's a chart:
http://www.cdc.gov/nchhstp/newsroom/docs/2014/HIV-testing-Labs-Flowchart.pdf
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