Laboratories use different laser-based scanners to scan microarray images.
To assess whether results from different scanners are comparable, and thus
whether data from different laboratories can be compared, we scanned the sa
me microarray slide with three, commercial scanners that use different imag
ing techniques. After the acquisition of the microarray images produced by
the three scanners, the images were quantified using a single imaging softw
are package and protocol The results were compared, and we found that the d
ata obtained from the three scanners were comparable and that the variation
s. caused by the use of different instruments were negligible, in spite of
the fact that the scanners were based on different optical imaging techniqu
es.