Q and A


Why do I have a number on my negative test result?

I have taken an HIV test and my index value is 0.08 which is negative, what does this mean?


Some tests (not usually in the UK) include a number (ie 0.31 or 0.64).

  • If the number is less than 1.0 the result is negative.
  • If the result is above 1.0 the result is positive
  • If the result is very close to 1.0 (higher than 0.90) the doctor may repeat the test.

A higher number below 1.0 does NOT indicate a higher chance of having HIV.


  1. Lisa Thorley

    Hi Piet,

    Please see question one here:


  2. Piet

    I have a low risk result. I dont sleep with other people. I can’t understand how this is possible. I have done the retest. What is the chance of it being positive?

  3. Lisa Thorley

    Hi Asad,

    You test results indicate that you are negative.

  4. Asad

    Hi I done sucking a person and had a precum small drop in my mouth but not discharge in my mouth so I did a HIV 1and 2 test and the result is negotiate but I am maried about the volume value its shows 0.38 and I did the test after 4 days of that sex plz Gide me thanks

  5. Simon Collins

    Hi, firstly you didn’t have sex that would put you are risk. Secondly, the tests show you are both HIV negative. Please take time to read about HIV and risk so that you can enjoy sex more freely in the future. Info about testing and transmission is linked to this answer:

  6. Anonymous

    I am 23 , i had a mutual mastrubation on august 2014 my partner said he is hiv positive we didn’t perform any oral or anal sex later he said i want to stop this thing and lied you he took test after 6 month and showed the results it is negative after that life goes well but my mind refuse to accept that results i called him back in mid july 2016 because of fear he said i took the test and showed to you then whats your problem ? I asked him to took test again with me in September 2016 he said ok and took hiv tridot test and the results are neagtive and i took hiv ag/ab combo test and my value is 0.08 non reactive is my test result is conclusive or not and i am not sexually active with anyone after that incident happened in 2014 but the fear i have doesn’t fade away if i want to do any other test or its enough plz reply i am fainting