Important Assay Notes
1. Remove cultures from incubator into laminar flow hood or other sterile working area.
2. Aseptically add MTT SOLUTION in an amount equal culture volume.
3. Incubation times should be consistent when making comparisons.
4. If cells are attached to culture vessel growth surface, remove and dispose of the culture fluid. Add MTT
SOLVENT in an amount equal to the original culture volume. Solvent volumes may vary but the final volumes
should be consistent to facilitate comparison.
5. If cells are not attached or loss of MTT formazan occurs if culture fluid is removed, add MTT SOLVENT