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Table 2 The effect of blood volume in the Tempus tubes on RNA quality

From: Human blood RNA stabilization in samples collected and transported for a large biobank

Blood volume (ml)

Yield total RNA (ug)

RNA Integrity Number (RIN)

OD260/280 ratio

OD2602/230 ratio

A) Adult blood samples (n = 3)*

3.0

7.90 ± 1.50

8.20 ± 0.06

2.19 ± 0.02

2.10 ± 0.23

2.5

3.38 ± 0.90

8.13 ± 0.27

2.24 ± 0.05

0.91 ± 0.46

2.0

2.94 ± 0.91

8.40 ± 0.08

2.12 ± 0.08

1.05 ± 0.53

1.5

1.38 ± 0.59

3.53 ± 2.53

2.51 ± 0.08

0.64 ± 0.32

1.0

0.55 ± 0.50

1.13 ± 0.13

1.19 ± 0.44

0.38 ± 0.38

0.5

0.07 ± 0.03

1.00 ± 0.00

0.77 ± 0.39

0.05 ± 0.05

B) Cord blood samples (n = 2)

3.3

79.65 ± 4.76

7.15 ± 0.78

2.15 ± 0.00

2.12 ± 0.00

3.0

74.60 ± 1.23

7.50 ± 0.65

2.17 ± 0.00

2.15 ± 0.01

2.0

44.42 ± 1.91

9.10 ± 0.00

2.18 ± 0.01

2.09 ± 0.01

1.0

33.92 ± 3.13

9.45 ± 0.04

1.98 ± 0.01

1.61 ± 0.02

0.5

4.29 ± 0.11

1.03 ± 0.03

1.25 ± 0.03

0.53 ± 0.01

  1. Notes. *There are significant blood volume dependent reductions in the RNA yields and in the RNA qualities (RIN, OD 260/280 and OD 260/230 ratio), p < 0.05. n = number of tubes.