Measuring Cell Integrity
Transepithelial Electrical Resistance
(TEER Value Measurement)

Optional on all Cytogration systems is the TEER method of verifying membrane integrity. Unlike chemical methods which provide only spot checks and use the tested membrane, the TEER measurement method checks all membranes and is nondestructive. Higher electrical resistance across a membrane indicates well-formed junctions and a healthy membrane suitable for permeability tests.

The TEER value option is particularly cost-effective in its ability to identify unusable membranes, thus saving the time and media associated with performing an assay on unsuitable membranes.