Does anyone know where I can get a free paternity test done? Please respond I really need advice.?

I need to determine paternity for my son and I have medical. Is there anyone who knows places located in Richmond, Ca or Oakland, Ca? That is free or accepts medical so that I can finally solve this problem.Does anyone know where I can get a free paternity test done? Please respond I really need advice.?
The state does it for free to determine if someone needs to be paying child support.

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