The Iowa Supreme Court has ruled that the implied consent procedures contained within Iowa Code section 321J are not the exclusive means for an officer to investigate an OWI, and an officer may bypass the implied consent procedures and apply for a search warrant in lieu of utilizing implied consent.
Furthermore, in a similar case, the Court held that if the officer has applied for a search warrant for a body specimen, and subsequently violates Iowa Code section 804.20 by failing to allow a requested phone call to a lawyer or family member, the specimen obtained via the warrant is not necessarily suppressed and excluded, if the warrant was obtained via means independent of and not tainted by the subsequent rights violation.