Table 1.

Copy numbers detected in 1 mL of plasma by ddPCR

Collection time	Copies in 1 mL of plasma
15 min	2.52 × 106
6 h	1.34 × 106
1 day	2.89 × 105
2 days	2.48 × 104
3 days	1.55 × 104
4 days	1.32 × 104
5 days	3.80 × 103
6 days	4.25 × 103
7 days	2.52 × 103
2 weeks	698
3 weeks	1.06 × 103