Kindly check the following links and their DATES. They both include comments of Dr Sean and Dr Jose.
In 2008, both doctors talk about the merits of the DUO test at four weeks, with Doctor Sean taking a slightly more conservative stance.
In 2014, and with 8 years more experience, you see Dr Sean still going for the 12 week mark saying:
"The standard guidance is that people should test 12 weeks after finishing PEP or 16 weeks after the original exposure.
I'M AFRAID YOU CAN'T RELY ON ANYTHING ELSE."
Furthermore, you see doctor Jose in 2011 also going for three months and quoting UK guidelines despite not having seen any cases turn negative after 8 weeks.
"However current UK guidelines still recommend to have a final test at 12 weeks for it to be considered final and fully conclusive"
The doctors know when to say conclusive or inconclusive based on their OWN assessments.
Please bear in mind that at 4 weeks an antibody test is NOT conclusive, and that is exactly what the DUO at 4 weeks is for HIV-2.
It detects antibodies and antigen for HIV-1, but only relies on the detection of antibodies for HIV-2. ((HIV-2 is VERY rare, but unfortunately very real)).
An antibody test at 12 weeks would CERTAINLY detect antibodies for both types.
Please take a look at link below.
People from ALL OVER THE WORLD post questions on this forum. Sometimes with high command of English and sometimes with lower.
Sometimes the word "DUO" or "4th gen" may be lost in translation, but the term "12 weeks" is more likely to stick. So, a person with low English proficiency may remember the "4 weeks" from the sentence "Get a DUO test at 4 weeks", but may not comprehend, remember the name of the test or may even fail to communicate it to the lab in there own language.
Only test manufacturers can set actual guidelines for testing. The CDC makes recommendations, and the doctors in the filed can interpret them.
I am not a doctor, nor is anyone in this thread. That is why I said it is a personal decision when to test, and a person can take all of this information and make their choice.
No one in this thread is actually wrong, so have a great day, everyone. This thread is now closed.
Put all the above together and it may make sense why some members ((here)), including me, may advise testing at 12 weeks.