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. 2022 Feb 7;22(5):1786–1802. doi: 10.1111/1755-0998.13588

TABLE 1.

Summary of DNA concentration and quality metrics. Technical replicates are denoted as “XX_1” and “XX_2”

Extraction methodology
PB PE UC GT PC AE
Method Metric PB_1 PB_2 PE_1 PE_2 UC_1 UC_2 GT_1 GT_2 PC_1 PC_2 AE_1 AE_2
Qubit DNA concentration (µg ml–1) 2.34 1.71 4.08 4.21 30.7 36.2 110 110 75.8 77.9 90.6 95.5
Nanodrop A260/A280 a 6.01 5.53 1.75 2.27 1.95 1.74 1.74 1.82 1.97 1.95 1.8 1.76
Nanodrop A260/A230 b 0.26 0.16 0.33 0.08 1.98 2.02 1.86 2.27 2.07 2.07 1.56 1.36
a

Primary measure of nucleic acid purity—expected value for “pure” DNA: ~1.8 while >2 indicates RNA contamination.

b

Secondary measure of nucleic acid purity—evaluates residual chemical contamination (phenol, guanidine HCl, carbohydrate carryover). Expected values are in the range of 1.8–2.2. Values significantly lower indicate chemical contamination and are undesired.