The investigation covered 317 abortions performed in June at the only Planned Parenthood facility in Missouri that performs surgical abortions.
In every case at the St. Louis facility, the attorney general's report found that aborted fetuses had been shipped to a pathology lab, as required by state law, and then incinerated.
"The information and documentation we reviewed did not reveal any irregularities involving the transmission, examination, or disposal of the fetal organs and tissue," the report concludes.
The attorney general's investigation came after release of videos of national Planned Parenthood officials discussing what critics alleged involved the sale of body parts from fetuses aborted at Planned Parenthood facilities.
In the aftermath of the videos, a special Senate committee held contentious hearings in which members questioned the level of oversight by the state Health Department of Planned Parenthood operations.
Shortly after the last hearing, the University of Missouri announced it would terminate a relationship with a Planned Parenthood affiliated physician that allowed the Columbia Planned Parenthood facility to offer non-surgical abortions.