Easy and Fast “HIV Test and Treat” Strategy

Under what circumstances should I get tested?

  1. After having oral, vaginal or anal sex with an HIV-positive individual or with someone whose HIV status is unknown
  2. After injection with syringes shared with others
  3. After having a surgery, piercing or tattoo with surgical instruments that have been used by someone else before
  4. After being sexually assaulted

What should I do when I suspect I am exposed to HIV?
Get tested immediately





What measures should I take after taking the HIV Test?

HIV Test Flow Chart English2
HIV Test Decision Chart

Methods to Test for HIV:

  1. Blood (most effective)
  2. Saliva
  3. Urine

Three Biological Markers to Diagnose AIDS:

Antibody Tests

Our body produces proteins that fight diseases. Likewise, we react to HIV infections by producing HIV Antibodies. By testing for these antibodies in us, we will be able to tell if we have infected HIV. However, it takes about 3 - 12 weeks for our body to produce these antibodies starting from the time of infection. During this period (window period), the result of the HIV test can be affected.


Combination Tests (Antibody + Antigen Tests)

During the early phase of HIV infection (2 weeks after infection), our body produces a P24 protein that is detectable with the Antigen test. In this period, the patient is highly infectious. This test is highly sensitive and its specificity level ranges around 99.7% - 99.9%. However, the level of P24 proteins may decline after 4 weeks of infection because the antibodies we produce have joined the scene. Therefore, a combination of an antigen and antibodies tests can ensure a more significant result.



This test detects the actual HIV virus itself in the human body. Only after 1 - 3 weeks of exposure to HIV is long enough to carry out the HIV RNA Test.


Related Links

HIV Test

PEP Medication


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Doctor Consultation, Testing, Vaccination & Health Screening

Unit 1106, 11/F, World-Wide House,
19 Des Voeux Road Central,
Central, Hong Kong
Central station Exit B


Unit 1106, 11/F, World-Wide House,
19 Des Voeux Road Central,
Central, Hong Kong
Central station Exit B

Opening Hours (Consultation, Testing and Vaccination)

Mon to Fri 9:00am-6:00pm  
Sat 9:00am-1:00pm
Sun and Public Holiday Closed



Mon to Fri 9:00am-6:00pm 
Sat 9:00am-1:00pm 
Sun and Public Holiday Closed