Table 3.

Median RNA (range) from 18- versus 20-gauge needle samples from normal and tumor tissues obtained from the kidney, lung, and liver.

	18G biopsy (ng RNA)	20G biopsy (ng RNA)	p value (18G vs. 20G)
Any organ
Normal	510 (30, 23540)	240 (30, 7090)	<0.001
Tumor	1100 (110, 17210)	230 (60, 5210)	<0.001a
Kidney
Normal	480 (230, 1210)	270 (110, 460)	<0.001
Tumor	510 (220, 3420)	290 (70, 2480)	<0.001
p value (normal vs. tumor)	0.855	0.217
Lung
Normal	150 (30, 4940)	120 (30, 400)	0.008
Tumor	2870 (170, 12700)	290 (70, 2480)	<0.001
p value (normal vs. tumor)	<0.001	<0.001
Liver
Normal	4740 (60, 23540)	700 (60, 7090)	<0.001
Tumor	1190 (110, 17210)	150 (60, 5210)	<0.001
p value (normal vs. tumor)	0.012	0.002

^aExact test could not be performed due to ties, normal approximation used.