why can't you do pca graphs for lipids can ppa be used in lipids why do i use pca analysis what is pca analysis in lipids what is pca graph what to do with pca graph how to do pca analysis what is pca analysis does pca cluster pca is why not cluster analysis can a pca be used on an lipid panel what is the problem with pca graphs why do you have to use pca graph how to do a pca analysis of lipids pca is pca cluster analysis? what to do with pca graphs what is pca analysis why would you use pca analysis can a pca be a cluster analysis analysis what is the problem with a pca