Yes, it is an option. According to the ASRM (American Society for Reproductive Medicine), it can occur intragenerationally between siblings or cousins, (e.g. a sister carrying her sister's baby), or intergenerationally, as when a mother carries a baby for her daughter. So, while surrogacy laws vary by state, normally it's possible for intended parents to use a family member or a friend to be their GC.
Read the full article on: What Is Surrogacy & How Does It Work? – Everything You Should Know ( 38).

Andrea Rodrigo
Bachelor's Degree in Biotechnology from the Polytechnic University of Valencia. Master's Degree in Biotechnology of Human Assisted Reproduction from the University of Valencia along with the Valencian Infertility Institute (IVI). Postgraduate course in Medical Genetics.