A new group called Bloomington Consumers For Birth Choices got more than 1,000 people to sign a petition in support of the effort.
The lawsuit seeks the destruction of all blood samples taken from newborns for disease screening.
A recent IU study shows some mental disorders are linked to preterm birth, but others seem to be more tied to genetics.
Columbus Regional Hospital is no longer inducing early births for convenience's sake after partnering with March of Dimes.
The March of Dimes gave Indiana a "C" rating for premature births, up from a "D" last year.