We recently published ImaGEO, a webtool to perform meta-analysis with GEO datasets. You only have to introduce the GSE codes and assign samples to groups. All the necessary steps are automatically performed. http://bioinfo.genyo.es/imageo/ Paper: https://academic.oup.com/bioinformatics/advance-article-abstract/doi/10.1093/bioinformatics/bty721/5076580

Do you mean that you are interested in finding the values derived from a specific study used in the meta analysis?

Meta-analysis involves combining different but related studies to obtain reliable results. You can refer http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3351145/ for different meta-analysis approaches that can be implemented on GEO datasets.

There are few gene expression databases developed using result of microarray meta-analysis as well, where you can obtain the gene expression readily.

Please check attached links

http://resource.ibab.ac.in/MGEx-Udb/

http://resource.ibab.ac.in/MGEx-Tdb/

We recently published ImaGEO, a webtool to perform meta-analysis with GEO datasets. You only have to introduce the GSE codes and assign samples to groups. All the necessary steps are automatically performed. http://bioinfo.genyo.es/imageo/ Paper: https://academic.oup.com/bioinformatics/advance-article-abstract/doi/10.1093/bioinformatics/bty721/5076580