The court did not ordered a drug test?

Sure. You can refuse to cooperate with DHS, but your kids will likely be removed.

The process is very similar to divorcing someone out of custody. The main difference is that your husband will need a Guardian ad Litem.

Can my son's grandma keep him from me with out a court order and me having full rights.

Unless there’s a court order stating otherwise, your mother has no legal rights to your child.

What could be the best outcome ?

I agree. The best outcome would be a dismissal.

I’m not aware of any publicly available forms. Hiring an attorney would be a good idea.

If you aren’t happy with your current attorney, hire someone else. Nobody is going to volunteer to help you for free.

If she's violating a court order, your remedy is to file for contempt.

Can I get custody of my niece and nephew?

You’ll want to file a guardianship action with the court.

These cases are so fact intensive that your short recitation makes it impossible for anyone to say how likely your chances are. You should discuss...

You can file an action in the appropriate court to disestablish and establish paternity.