Main Content
Top of the page
Some lab tests (especially antibody and antigen tests) report results in titres. A titre is a measure of how much the sample can be diluted before the antibodies or antigens can no longer be detected.
A titre of 1 to 8 (1:8) means that antibodies or antigens can still be found when 1 part of the blood sample is diluted by 8 parts of a salt solution (saline), but they can no longer be found at a dilution of 1 to 16 (1:16). A larger second number means there are more antibodies or antigens in the sample. So a titre of 1 to 128 (1:128) means more antibodies or antigens in the sample than a titre of 1 to 32 (1:32).
Current as of: February 27, 2023
Author: Healthwise Staff
Medical Review:Anne C. Poinier MD - Internal Medicine & Adam Husney MD - Family Medicine & Martin J. Gabica MD - Family Medicine & Thomas M. Bailey MD - Family Medicine
This information does not replace the advice of a doctor. Healthwise, Incorporated, disclaims any warranty or liability for your use of this information. Your use of this information means that you agree to the Terms of Use. Learn how we develop our content.