Testing the Indica and Sativa influence of a strain

I guess if not known.. between leaf size,stretch and flowering time and high,,,,yeehaw but bump....labs for thc cbd ect terpenes ect easy to find....I don't think enough of the dna is mapped or freely available..never heard of any such test myself but I aint no scientist...ask chimera or skunkman is my best guess..if they don't know it don't exist...I do think its possible just not available

The only way is to have a lot of experience using cannabis. You have to compare the effects to the strains that you have used before, because you can use those genetics as a control to base what you are testing on. I know how pure indicas, pure sativas, sativa dominant hybids, indica dominant hybrids and hybrids make me feel. So when I find a strain I can compare it against the strains that I know already. If it makes me feel like how hash plant or hindu kush makes me feel then I know it is an indica.

Also, like stoned-trout said, you will be able to see different characteristics when you grow them like leaf structure and flowering time.