w10.0.26 | c9.0.88.80
PROD | u7.5.14
 

 

Frequently Asked Questions About Our Products And Services


What are Q20 (Q30 / Q40) bases?

Eurofins Genomics is using a quality base calling software which examines the peaks around each base call to assign a quality score (Q) to each base call. Quality scores (Q) range from 4 to about 60, with higher values corresponding to higher quality. The quality scores are logarithmically linked to error probabilities, as shown in the following table:

Quality ScoreProbability of a wrong base callAccuracy of a base call
Q 10 1 in 10 90 %
Q 20 1 in 100 99 %
Q 30 1 in 1.000 99.9 %
Q 40 1 in 10.000 99.99 %
Q 50 1 in 100.000 99.999 %
Scroll to top ^^