My impression is that the collection is so routine and automatic that most parents don&#x27;t even notice it&#x27;s happening, and would need to assert themselves in advance in writing to exercise their religious opt-out.<p>This site suggests Pennsylvania&#x27;s policies for sample retention (8 months) and use of results (by subject and their medical provider only) are more restrictive than &quot;save indefinitely&quot; states like California:<p><a href="http:&#x2F;&#x2F;www.babysfirsttest.org&#x2F;newborn-screening&#x2F;states&#x2F;pennsylvania" rel="nofollow">http:&#x2F;&#x2F;www.babysfirsttest.org&#x2F;newborn-screening&#x2F;states&#x2F;penns...</a>