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Well its recommended for testing to be done at minimum 12 weeks post exposure. Antibodies can develop at any stage / day following the exposure so even a day counts. Otherwise you might have to get a repeat test as it would not be called CONCLUSIVE.
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Well it varies for different STDs. Sharing a useful link below;
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The reality is that we do not know the impact of these 4 days. Studies have only been done at the 12 weeks mark. There is no study that compares 10 or 11 weeks to 12 weeks, and certainly no comparison of 11 weeks and 3 days to 12 weeks.
If someone is anxious, then we still recommend waiting the full 12 weeks, because we cannot reference any clinical data to say that a test at 11 weeks and 3 days is conclusive. So, getting tested 4 days early because you are bothered by the waiting game may relieve your anxiety about waiting, but there may then be anxiety because of uncertainty about whether the test is conclusive.
There certainly is not much difference between 11 weeks and 3 days, and there may not be any difference, but nobody can say with certainty.
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Asking if it is possible that a test could turn positive in those 4 days is the same as asking whether there could be a difference between 11 weeks and 3 days and 12 weeks. Is it possible that there could be a difference between 11 weeks and 3 days and 12 weeks? Of course, it is possible. But as I said above, no studies have been done comparing 11 weeks and 3 days to 12 weeks. The only studies that have been done show that the test at 12 weeks is conclusive. So that is also all that can be said with certainty.
Which IgG test are you referencing?
Are you referring to the HSV2 IgG test?
The false positive rate for HSV IgG tests varies in studies from 25-50%. But in reality, it is very dependent upon the numeric index result. Any index over 1.1 is considered positive. But when there is a mild elevation (1.1-1.5), the false positive rate is over 80%. When there is an index of 2.0-2.5, the false positive rate is about 50%. If the index is >3.5, then false positives are unusual and a result >3.5 is consider reliable. These studies have been done on HSV2, but it is presumably similar for HSV1 testing.
If you consider an overall rate of 25-50% as very common, then yes.
I prefer to give actual numeric data, rather than using subjective terms, such as very common.
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Yes, the absence of symptoms and a previous negative test says that you are most likely negative.
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Yes, you can consider them as conclusive.
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