TITER:
The reciprocal of the last dilution of a titration giving a measurable effect.
Example:

• A blood sample (tube 1) has been diluted by 1/2  to produce tube 2,  tube 2 was

diluted by 1/2  to produce tube 3 and so forth.
• A substance was added to each tube to detect antibody.
• The 4th tube is the last dilution at which the antibody is detected, and it is 1/8 th the
strength of the original sample.
• The titer of the antibody is therefore 8.

1	2	3	4	5	6
1:1	1:2	1:4	1:8	1:16	1:32

Content copyright © 2000 Obfocus.com. All rights reserved.