Table 2.

Result of Reference Range Studies for Qualitative EGFR Assay

Matrix	Variant	Median	Mean current, nA	SD	2 SDs	3 SDs	Reference range (3 SDs), nA
Plasma	T790M	−6.43771	−5.96	16.18	32.37	48.55	<43
Plasma	L858R	−25.84727	−22.79	14.07	28.14	42.21	<20
Plasma	Exon 19	−34.24165	−28.05	15.90	31.79	47.69	<20
Saliva	T790M	10.49715	8.82	11.58	23.16	34.75	<44
Saliva	L858R	−0.5126045	−1.13	10.56	21.13	31.69	<31
Saliva	Exon 19	−3.927202	−4.46	12.08	24.16	36.24	<32