i want to trace my ancestry by using the y-chromosome genealogical DNA test. help me out if you know where we can get it done in india?

I have some friends who were adopted from Colombia into the United States with families here. Now most of them are grown and are adults and have children of their own. There is only one thing missing in their lives and that is: They are questioning their ancestry and want to find their natural parents in Colombia.
I know it would be a massive undertaking but anything is possible in this world. I have always believed that. Could we get everyone together and have DNA taken on them and put the findings into a database and then do the same for the families who lost their loved ones, gave the kids up or were kidnapped and sold to orphanages in Colombia, have the DNA taken in Colombia of the families and then reunite them. I know it all sounds farfetched but it can happen. How much would it cost for one person to have a DNA test? That is my main question. Thanks for your help and understanding. These people want to know their roots in Colombia and know their natural parents.

I know that my ancestry is mixed and I have no way to determine who my ancestors were by asking family members. I just want to find out what things I could be mixed with by doing DNA testing thats accurate and at a reasonable price that is not too expensive. I don`t know what test I should take.

I am tracking my paternal grandmother's ancestry and have hit a roadblock. I'd like to do dna testing to see, but I'm not sure which test would give me the correct results-admixture? Also, does it matter if it's a female or male descendant who does the test? Since they're expensive tests, I want to make sure we do it correctly! Thanks!