Q and A

Question

What do my viral load test results mean?

Please can you explain how viral load results mean?

I got my results back and I don’t understand them. It says log units is 2.777 and my RNA copies is 599 cp/mL.

Is this low or high? My CD4 count is 697.

Answer

Hi

Thanks for your question – and it is good that you want to understand your test results.

Sometimes this can be dfficult if your doctor has not explained them clearly. It is also okay to ask your doctor or nurse to explain anything that you are not sure of.

Viral loads tests tells you how much virus is in a millilitre of blood (or another body fluid being measured).

When not on treatment, viral load can range from undetectable to several millions. For anyone on HIV treatment (ART), viral load should ideally get to undetectable, This is defined as being less than 50 copies/mL.

Your test results are the 599 copies/mL, so your viral load is still detectable at 599.

The ‘2.777 log units’ from your test results is a slightly complicated way of saying exactly the same thing as ‘599 copies/mL’.

Because viral loads have such a huge range of numbers they are sometimes expressed in ‘log units’ to make it easier to write them on graphs and diagrams. Doctors and scientists use log scales to look at changes to viral loads over time. See this table of log units compared to viral loads in copies/mL.

Whether this is considered high or low depends on whether or not you are on treatment.

  • If you’re not on treatment yet this is a relatively low viral load, which is a good thing.
  • If you are on treatment, then if you only recently started ART, your viral load might still be going down.
  • If you have been on treatment for more than six month, please talk to your doctor about why the results in not undetectable.

For more information about viral loads and how they relate to both treatment and infectiousness you can also have a look at the following links:

Viral Load and Treatment
Viral Load and Infectiousness

If you tell me if you are currently on treatment or not I can provide more individual information, Also, if you are on treatment, when did you start?

This answer was updated in January 2016 from a question first posted on 5 April 2012.

202 comments

  1. Lisa Thorley

    Hi Zeeh,

    Though your viral load is still detectable, you’ve done really well in your first month on meds. Hopefully your viral load will become undetectable within the next few weeks. Your CD4 is also good. This with time will rise.

    Therefore, you really don’t need to worry. You’ll be OK.

    For more info on HIV and pregnancy, please see here:

    http://i-base.info/guides/pregnancy

  2. Zeeh

    Hi
    I started taking the meds on the 25th of july and im pregnant, yesterday i got the viral load results it’s 120 and the cd4 is 432, should I be worried? Im attending a public clinic and they did not explain anything to me.

  3. Lisa Thorley

    Hi Unathi,

    If you’ve been taking your meds as prescribed this might be a mistake. It could however be an indication that the meds aren’t working as they should be doing. Therefore, you will need to discuss this with your doctor. For more info, please see here:

    http://i-base.info/guides/changing

  4. unathi

    Hi my viral load in 2016 was 20 now in 2017 it says 425 does that mean i don’t take my medication

  5. Lisa Thorley

    Hi Nathy,

    Were there any numbers given?

  6. Nathy

    My virus load results says LTD’S what does that mean.

  7. Lisa Thorley

    Hi Mamiya,

    When someone is on meds and their viral load increases instead of decreasing this is a sign that the meds may not be working. For more info please see here:

    http://i-base.info/guides/changing

    If this is happening you may need to change treatment. You will need to talk to your doctor about this.

  8. mamiya

    My viral load has gone from 578, to 1580 to 8920. I’m so worried what’s the problem

  9. Lisa Thorley

    Hi Iavona,

    Are you saying that you’ve been on meds for a year and your viral load is still detectable? If you are then this implies that the meds aren’t working as they should do.

  10. lavona

    Can you please advise if doctor said to me that he is worried about the viral count that is very high and treatment was done over a year
    ..what does means for me?

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