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Definition

A titer is a measurement of the amount or concentration of a substance in a solution. It usually refers to the amount of antibodies found in a person's blood.

Information

Blood titer measurements can help determine medical treatment. Antibody titers show if a person is immune to diseases such as measles, chickenpox, or hepatitis. They can also help measure harmful antibodies related to lupus.

A titer measurement is expressed as a ratio, such as 1:40.

References

Aoyagi K, Ashihara Y, Kasahara Y. Immunoassays and immunochemistry. In: McPherson RA, Pincus MR, eds. Henry's Clinical Diagnosis and Management by Laboratory Methods. 24th ed. Philadelphia, PA: Elsevier; 2022:chap 45.

Last reviewed November 4, 2021 by Linda J. Vorvick, MD, Clinical Associate Professor, Department of Family Medicine, UW Medicine, School of Medicine, University of Washington, Seattle, WA. Also reviewed by David Zieve, MD, MHA, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team..

Related specialties

Clinical Trials: Titer

UF Health research scientists make medicine better every day. They discover new ways to help people by running clinical trials. When you join a clinical trial, you can get advanced medical care. Sometimes years before it's available everywhere. You can also help make medicine better for everyone else. If you'd like to learn more about clinical trials, visit our clinical trials page. Or click one of the links below:

ALTA TIPS

ALTA is a multicenter consortium focused on the management of portal hypertension. ALTA TIPS is a longitudinal observational study of patients who are undergoing transjugular intrahepatic portosystemic shunt (TIPS) placement. ALTA will create a…

Investigator
Giuseppe Morelli
Status
Accepting Candidates
Ages
18 Years - N/A
Sexes
All
TS MOD CM GPI

The investigators will implant and monitor 8 research subjects with a subcortical closed-loop system for detection and suppression of tics. The project will use the FDA-approved "Medtronic Percept PC" device, which is an implantable neurostimulator…

Investigator
Michael S Okun
Status
Accepting Candidates
Ages
18 Years - 85 Years
Sexes
All

News and Patient Stories: Titer

Caden Buth’s Story

Four-year-old Caden Buth is energetic. He’s happy, loves to talk, loves to run and enjoys life. However, sometimes those things that he loves to do are…

Four-year-old Caden Buth is energetic. He’s happy, loves to talk, loves to run and enjoys life. However, sometimes those things that he loves to do are difficult. At four weeks old, Caden was diagnosed with Hemophilia A, and he’s not had an easy road since.
More Titer stories

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