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How many years do the antibodies stay in the blood?

Blood tests (for antibody) are used to screen for H.pylori. They remain positive for many months after treatment so can only be used as the initial test. Urine antibody is a "pregnanacy style" urine test. Accuracy is slightly less than blood tests. A negative blood test is good evidence that Hp is NOT present. Use it to exclude the diagnosis (but no test is 100% perfect remember).

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Health Inquirer
Posts: 18
Joined: Sat Nov 22, 2014 5:06 am

How many years do the antibodies stay in the blood?

Post by Health Inquirer »

Hello,

How many years do the antibodies stay in the blood? 10, 15, 20 years?

I deeply appreciate all your efforts into assisting people with their questions.
Thank you very much and best to you.

Helico_expert
Site Admin
Posts: 3641
Joined: Wed Mar 02, 2011 7:20 am

Re: How many years do the antibodies stay in the blood?

Post by Helico_expert »

well it depends. If you meant the urease antibody, i think it last a few weeks to a few months. If you meant the cagA antibody, it can generally last longer than 6 months or a year. It's depending on individual's immune system. Some papers even reported antibody detected after 2 years.

refrence
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1797704/

Health Inquirer
Posts: 18
Joined: Sat Nov 22, 2014 5:06 am

Re: How many years do the antibodies stay in the blood?

Post by Health Inquirer »

Dear Helico Expert,

As always, thank you very much for your generous gift of time, thoroughness, and kindness in your replies. I apologize for the delayed reply, work has been very hectic.

I am not a scientist, so I guess I was not 100% sure what antibody I was referring to. I am mainly referring to the blood test they do to find out if you have an H pylori infection. I have heard that the blood test is only good if you have never been treated for H pylori in the past because antibodies can stay in the blood for 10 years or longer. I was wanting to find out if that is true, the 10 years comment. And if they stay in the blood longer than 10 years, how long are they in the blood for? 20 years? 30 years? After what you sent it seems like 10 years might not be the truth. Your study talks about 2 years. 2 years is much different than 10 years. So, I am just trying to find out for sure. :D Any thoughts?

My deepest gratitude to you, always, for your efforts.

Helico_expert
Site Admin
Posts: 3641
Joined: Wed Mar 02, 2011 7:20 am

Re: How many years do the antibodies stay in the blood?

Post by Helico_expert »

no worries. i think 2 - 3 years is about average. Anyway, you have taken treatment, you can always do breath or stool test to find out if you are still infected.

Health Inquirer
Posts: 18
Joined: Sat Nov 22, 2014 5:06 am

Re: How many years do the antibodies stay in the blood?

Post by Health Inquirer »

Great to know. :D

As always, thank you very much for your time and efforts, Helico Expert.

I hope you have a wonderful week. Best to you.

Jesusvelis95
Posts: 1
Joined: Tue Sep 22, 2015 6:14 am

Re: How many years do the antibodies stay in the blood?

Post by Jesusvelis95 »

Wow I didn't know antibodies stayed in the blood for so long... does anyone know of any other sources that could teach me about this subject?? I've been spending all my time​ on this website
lately, so I haven't had any time to research the topic.

Helico_expert
Site Admin
Posts: 3641
Joined: Wed Mar 02, 2011 7:20 am

Re: How many years do the antibodies stay in the blood?

Post by Helico_expert »

antibodies is a very big topic. you better ask more specific question.

Health Inquirer
Posts: 18
Joined: Sat Nov 22, 2014 5:06 am

Re: How many years do the antibodies stay in the blood?

Post by Health Inquirer »

I don't know how to help; however, I suggest following up with Helico Expert who is an excellent resource and guide! :D Best wishes.

michaeljonson
Posts: 58
Joined: Mon Nov 30, 2015 4:35 pm
Location: Texas

Re: How many years do the antibodies stay in the blood?

Post by michaeljonson »

It depends on the immune system of each individual.
Legacy ER & Urgent Care

Health Inquirer
Posts: 18
Joined: Sat Nov 22, 2014 5:06 am

Re: How many years do the antibodies stay in the blood?

Post by Health Inquirer »

Thank you for your reply, michaeljonson. I only just now saw it.

Thank you again and best to you.

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