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.
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