Advertisement
The Body: The Complete HIV/AIDS Resource
Follow Us Follow Us on Facebook Follow Us on Twitter Download Our App
Professionals >> Visit The Body PROThe Body en Espanol
Read Now: Expert Opinions on HIV Cure Research
   
Ask the Experts About

Understanding Your LabsUnderstanding Your Labs
           
Rollover images to visit our other forums!
Recent AnswersAsk a Question
  
  • Email Email
  • Glossary Glossary


HIV Testing methods
Oct 13, 1998

Dear Doctor:

Could you explain the different methods/techniques currently used to test HIV infection? and which of the following testing methods are the most accurate tests:

1. PGA 2. GA 3. Western Blot 4. ELISA

Thank you and I look forward to receive your reply soonest.

With warm regards

Response from Dr. Holodniy

I have to plead ignorance as to what the acronyms PGA/GA stand for. If you could give me the name, I probably know what it is. On to number 3/4. ELISA stands for enzyme linked immunosorbent assay. Another name is EIA, enzyme immunoassay. This test qualitatively detects whether any of several HIV antibodies are present in serum. It can not discriminate as to which kind of HIV antibody is present. These are usually used as screening tests. They can be done in blood, saliva, or urine. A western blot test is also an antibody test. It is more specific in that it visually shows you 8 or more different antibodies that the immune system makes against HIV. The standard testing algorithm calls for ELISA testing at baseline, 1,3, and 6 months after an exposure. A western blot is only done if the ELISA test is positive. These tests are in their 4 or 5th generation and are very sensitive and specific for HIV infection. Rarely because of other underlying diseases (cancer, other infections) these tests can be falsely positive. MH



Previous
Weak results
Next
HIV

  
  • Email Email
  • Glossary Glossary

 Get Email Notifications When This Forum Updates or Subscribe With RSS


 
Advertisement



Q&A TERMS OF USE

This forum is designed for educational purposes only, and experts are not rendering medical, mental health, legal or other professional advice or services. If you have or suspect you may have a medical, mental health, legal or other problem that requires advice, consult your own caregiver, attorney or other qualified professional.

Experts appearing on this page are independent and are solely responsible for editing and fact-checking their material. Neither TheBody.com nor any advertiser is the publisher or speaker of posted visitors' questions or the experts' material.

Review our complete terms of use and copyright notice.

Powered by ExpertViewpoint

Advertisement