HealthTap Online Primary Care Doctors Accepting New Patients
Book a video visit
HealthTap
Telehealth
A member asked:

Sir in blood antigen react with antigen or antigen react with antibody?

A doctor has provided 1 answer

Your question is not clear. For blood group testing, antibody reacts with antigen on red cells.. The antibody in blood reacts with red cells with known antigens. Visit this site for more info: https://medlineplus.gov/ency/article/003345.htm Wish you good health!

Dr Rhoads agreed

Answered 3/5/2021

0 views

Thank

Related Questions

A member asked:

Bloods done for HIV at GUM clinic. Would this test for antigens or antibodies or both? Tested 15 months out.

A doctor has provided 1 answer

A member asked:

Neg p24 antigen test and neg HIV1/2 antibody test at 11wks post exposure. Can I trust these blood tests and finally have some peace of mind? For HIV

A doctor has provided 1 answer

A member asked:

Question about HIV testing. I took a test that says it detects both antigen and antibodies, however it was a rapid test. They took my blood from a vein, instead of a finger. Test material serum, results in evening. How accurate at 8.3 (58 days) wks?

A doctor has provided 1 answer

A member asked:

I exposed myself on 01/07/21 by fingering a woman who tested HIV positive days after the fingerfacking act.I took an Antigen/antibody"duo test"on 7/9/21 where blood from my vain was drawn for laboratory test.Results were negative.Is this conclusive?

A doctor has provided 1 answer

A member asked:

IS HIV DNA PCR and Antibody/Antigen Laboratory at 26 days same time conclusive??? Blood draw risks, maybe needle reuse????

2 doctors weighed in across 2 answers

Sponsored Content
HealthTap Medical Group does not endorse products or services. Sponsored content revenues support our mission to make health information free and accessible to all.Learn more

People also searched for:

How can you tell if a newborn with blood group o has antibodies for both a and b antigen?
How accurate is the HIV antibody/antigen blood test at 8 weeks after exposure? Conclusive?
Will I be able to donate blood, after testing + for hep b core antibody and neg for hep b surface antigen?
In regard to HIV, do P24 protein levels decrease regardless of antibody response or is it specifically antibody-antigen complexing in the blood that causes p24 levels to become undetectable?
How much accuracy is expected with a Negative HIV Duo AB/AG full blood lab at 18 days of possible exposure? Would this timeframe detect the P24 Antigen reliably, if no antibodies are detected?

Telemedicine

Primary Care
Manage Your Conditions
Women's Health
Children's Health
Men's Health
Senior Health
Wellness, Prevention & Lifestyle
Sexual Health
Mental & Behavioral Health
Travel Medicine
Urgent Care
Ask your question
Didn't find what you're looking for?

90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more.

Ask your question

More of what we treat

Allergies
Antibiotics
Asthma
High Blood Pressure
Prescriptions
Type 2 Diabetes
Content on HealthTap (including answers) should not be used for medical advice, diagnosis, or treatment, and interactions on HealthTap do not create a doctor-patient relationship. Never disregard or delay professional medical advice in person because of anything on HealthTap. Call your doctor or 911 if you think you may have a medical emergency.
HealthTap
HIPAA logo
HIPAASecure
Soc 2 Type 2 logo
SOC 2 Type 2Certified
JCAHO Accredited
JCAHOAccredited
Member App

Download HealthTap

Video visit and message your doctor

Member App QR Code
Play Store Member LinkApp Store Member Link

Questions?

+1 (888) 828-0841support@healthtap.com
LinkedInTwitter
HomeTermsPrivacyCookiesDMCAHealth TopicsDoctors DirectoryDoctor Q&A by Specialty
Copyright 2026 HealthTap, Inc.