Dr. Tan and Partners is one of the few approved Anonymous HIV Testing Centres in Singapore. A detailed write up on our service is available here.

Other STD services: Early STD Screening, Rapid Hepatitis B Blood Test, Swab for Gonorrhea and many more... contact us to make an appointment now!

Video on the HIV Window Period and Test Accuracy

HIV Window Period and Test Accuracy

” Hi, I’m Dr Tan from Dr Tan and Partners.

Today we are going to talk about the HIV Window Period and the Accuracy of HIV tests.

This has understandably caused a lot of confusion.

The HIV Window Period is the time from when a person is infected with HIV to when our tests can tell us that he or she is infected with HIV.

This means if a person who is infected does a test during this so called window period, the test will tell us he is NOT infected with HIV even though he is. This is called a false negative test.

Logically, the window period depends on the type of HIV test done.

The PCR RNA HIV test is accurate from 10 days after infection.

The 4th Generation HIV test aka the combo test is accurate from 28 days after infection.

So what happens between day 1 and 10 you ask? This is called the eclipse period where no tests we have now are accurate.

To keep it simple, just remember this: If you are 10 days to a month from exposure, get the HIV RNA test. If you are 28 days or more from the date of exposure, get the HIV 4th generation test.

Thank you for watching, I’m Dr Tan from Dr Tan and partners”

– Dr Tan

If you are interested in HIV Testing, please come down to Our Clinics, call  Our Doctors.


1.) Robertson Walk  (+65 6238 7810)
2.) Bencoolen Street (+65 6884 4119)
3.) Novena Medical Centre (+65 6397 2095)
4.) Scotts Medical Centre (+65 6694 2348)
5.) Somerset -Orchard Building (+65 6262 0762)
6.) Katong – East Coast Road (+65 6635 2551)
Where to find us – here
Selected clinics are open on Saturday and Sunday.
Click Here for Contact Details, Address and Opening Times.
Email: doctor@drtanandpartners.com
Please email your queries, feedback and suggestions on what other topics you want to see in the comments section below.

Other articles:

Find out more about HIV related health information

More on HIV Symptoms

More about HIV Testing

More about HIV PEP

Leave a Comment

Thank you for your submission.

We will get back to confirm your appointment as soon as possible.