Detection of EGFR Mutation in Non-Small Cell Lung Carcinoma Using Immunohistochemistry (IHC)

Are you trying to detect a specific EGFR mutation in a lung adenocarcinoma using IHC?

Percent of the tumor cells that are negative (from 0 to 100)

Percent of the tumor cells that are weakly positive = 1+ (from 0 to 100)

Percent of the tumor cells that are moderatly positive = 2+ (from 0 to 100)

Percent of the tumor cells that are strongly positive = 3+ (from 0 to 100)

Cutoff for the score to be considered positive