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Table 2 Combinations of GenSolve, Qiagen and NucleoSpin protocols for DNA extraction from DBS: GQ versus GN and Gn methods

From: Optimized DNA extraction from neonatal dried blood spots: application in methylome profiling

      

65°C, 65 min

  
 

Sample code

DNA (ng/μl)

DNA (ng)

260/280

260/230

260/280

260/230

Protocol

 

NCS 31a

5.77

242

1.70

0.42

1.55

0.41

GQ

NCS 31b

8.87

426

1.81

0.95

1.54

0.71

GN

NCS 30a

12.8

538

1.88

0.79

1.76

0.76

GQ

NCS 30b

24.4

1171

1.84

1.22

1.90

1.51

GN

NCS 29a

20.7

828

1.85

1.13

1.76

1.00

GQ

NCS 29b

23.1

1063

1.93

1.38

1.85

1.37

GN

Precipitation buffer in GN changed to ethanol, leading to protocol Gn

NCS 22a

9.85

394

1.81

0.50

1.79

0.48

GQ

NCS 22b

8.00

368

1.90

0.83

1.79

0.75

Gn

NCS 21a

24.3

972

1.83

0.84

1.83

0.90

GQ

NCS 21b

27.7

1274

1.64

0.54

1.83

0.61

Gn

NCS 20a

15.0

600

1.78

0.56

1.77

0.60

GQ

NCS 20b

14.4

662

1.70

0.76

1.74

0.89

Gn

  1. Two punches, each having 9 mm diameter, were analyzed per DBS. Punches labeled “a” were tested with GQ while their matched pairs, labeled “b”, were tested with GN. When the DNA precipitation buffer in GN was changed to ethanol, the resultant protocol was termed Gn. Average eluate volumes by GQ and GN/Gn were 42 μl and 47 μl, respectively. Data represent averages of 2–4 readings per sample.