HIV Test in Bangalore (4th Generation p24 Ag/Ab)
Advanced NABL Accredited HIV screening detecting both p24 antigen and HIV-1/2 antibodies. Fast, discrete, and doctor-reviewed with reports delivered in 6 hours.
Possible HIV Exposure Within the Last 72 Hours?
Post-Exposure Prophylaxis (PEP) is a short course of antiretroviral drugs that can stop HIV infection after exposure. PEP is most effective when started within 24 hours, and must be initiated within 72 hours. Do not wait for test results before seeking a physician consultation.
Understanding the 4th Generation HIV Antigen/Antibody Duo Test
The 4th generation HIV test is the international gold standard recommended by the US CDC, WHO, and NACO for primary HIV screening. Unlike earlier 3rd generation assays that only detected host antibodies, the 4th generation test simultaneously detects:
- HIV-1 p24 Antigen: The viral capsid core protein produced during active viral replication in early acute infection.
- HIV-1 and HIV-2 IgM & IgG Antibodies: The immune response proteins produced by the human body in response to the virus.
Because p24 antigen appears in the bloodstream before the immune system produces detectable quantities of antibodies, this test shortens the diagnostic “window period” by several weeks.
Testing Timeline: When is an HIV Test Conclusive?
Too early for diagnostic antibodies or p24 antigen. If an exposure occurred within this timeframe, consult a doctor immediately for Post-Exposure Prophylaxis (PEP).
p24 antigen peaks during this phase. Over 95% of infections are detectable by day 28.
A 4th generation lab test from a blood draw is considered >99% conclusive at 45 days per CDC guidelines.
Definitive exclusion for all test types, fulfilling all global clinical criteria.
How Sample Collection Works (Clinic or Home Collection)
QXL Diagnostics provides trained phlebotomy specialists who collect a 3 mL venous blood sample using sterile, single-use vacuum collection tubes.
- No fasting required; you may eat and drink normally before testing.
- Doorstep collection available across North, South, East, and West Bengaluru.
- Strict temperature-regulated cold chain ensures biological integrity.
- Anonymous numerical barcode reporting available upon patient request.
NABL Accredited Laboratory Testing in Bengaluru
Processed in our central facility (NABL Certificate MC-6849). Every positive or borderline sample undergoes strict verification under NACO algorithms before reporting.
Interactive HIV Test Window-Period Calculator
Determine the most accurate testing window, assay sensitivity, and whether emergency Post-Exposure Prophylaxis (PEP) is required.
QXL standard testing uses 4th Generation ECLIA from venous blood, providing high accuracy from 18 to 45 days.
28 Days Elapsed Since Exposure
Approximately 95%–98% conclusive. CDC guidelines advise final baseline confirmation at Day 45–90.
Optimal window for 4th Generation ECLIA Duo testing. At this stage, free p24 antigen peaks while IgM antibodies are developing. A negative 4th generation lab test at this stage provides very high reassurance.
Medical Disclaimer: This window-period calculator is an educational resource based on clinical testing guidelines from the US Centers for Disease Control and Prevention (CDC), World Health Organization (WHO), and the National AIDS Control Organisation (NACO, India). It does not replace individualized clinical judgment. If you believe you have been exposed to HIV within the last 72 hours, seek urgent medical evaluation for PEP without delay.
Frequently Asked Questions About HIV Testing
What is the cost of an HIV test in Bangalore at QXL Diagnostics?
The 4th Generation HIV-1/2 Antigen & Antibody Duo test is priced at ₹945 at QXL Diagnostics. This includes both p24 antigen and antibody detection, processed on automated chemiluminescent immunoassay analyzers with same-day digital reporting.
How early can this 4th generation test detect HIV after exposure?
The 4th generation assay detects infection between 18 and 45 days after exposure. The viral p24 antigen is typically detectable in blood before antibodies have formed. Per CDC guidelines, a negative 4th generation test from a blood draw at 45 days is >99% conclusive.
Will my test result be kept completely confidential?
Yes. QXL Diagnostics enforces strict confidentiality. You can opt for numeric barcode labeling where personal details are masked in laboratory worklists. Reports are password-encrypted and accessible only to you.
What happens if an HIV screening test comes back reactive?
A reactive screening result is never reported as an automatic diagnosis. In accordance with National AIDS Control Organisation (NACO) and WHO guidelines, reactive samples are reflexively confirmed using supplementary assays. Our medical team offers compassionate, confidential post-test counselling.