Table 2.

cfDNA concentrations from matched plasma and urine samples of 15 TNBC patients prior to surgical tumor resection in ng/mL. The median cfDNA concentration from 4 mL plasma eluted in 20 µL ultraclean water was 172 ng/mL, ranging from 37–442 ng/mL. The median cfDNA concentration from 10 mL urine eluted in 20 µL was 196 ng/mL, ranging from 0–1820 ng/mL. Initially, in two cases, cfDNA was not detectable.

Patient ID #	cfDNA Concentration (ng/mL)
	Plasma	Urine
1	37	206
2	218	160
3	80	180
4	356	412
5	252	0
6	172	1820
7	244	196
8	420	0
9	69	650
10	212	192
11	118	1730
12	442	1410
13	112	180
14	158	110
15	80	254
median	172	196
range	37–442	0–1820