N.C. Gen. Stat. § 29-29: Release by advancee.

If the advancee acknowledges to the intestate donor by a signed writing that the advancee has been advanced the advancee's full share of the intestate donor's estate, both the advancee and those claiming through the advancee shall be excluded from any further participation in the intestate donor's estate. (1959, c. 879, s. 1; 2011-344, s. 5.)