The amendments have already been upheld in the second, non-final reading and were previously okayed by scandal-mired former Health Minister Guntis Belēvičs.
The new Health Minister wants to cancel the amendments, as does the Unity MP Edvards Smiltēns and the Welfare Ministry, which claims there are no legitimate reasons why women should be banned from donating eggs just because they haven't given birth.
While the Saeima Legal Office says the ban could be anti-constitutional.
About 100 people protested by the Saeima on June 16 claiming the changes to the sexual and reproductive health law were discriminatory and based more on a desire to impose traditional morality than medical science.