From: Tumour content ratio matters for detecting epidermal growth factor receptor mutation by cobas test in small biopsies; a retrospective study
Tumour content ratio
<  10%
≥ 10%
EGFR positive samples with cobas/total samples, n (%)
17/32 (53)
83/100 (83)
EGFR positive samples after dissection/total number of dissected samples, n (%)
5/15 (33)
2/14a (14)