Fig. 4From: Guidelines for molecular testing in non-small cell lung cancer – recommendations from the Brazilian Society of PathologyDiagnostic algorithm with small samples in patients with non-small cell lung carcinoma (NSCLC). * IHC and FISH should be used in validated labs. IHC for NTRK and ROS1 can be used only as a screening tool, to be confirmed by FISH, NGS or PCR. In most cases, NGS should be the preferred method up frontBack to article page