2024 Iowa Code 455B.115 – Analysis by certified laboratory required

2023 Iowa Code 455B.115 – Analysis by certified laboratory required

2022 Iowa Code 455B.115 – Analysis by certified laboratory required

2020 Iowa Code 455B.115 – Analysis by certified laboratory required

2018 Iowa Code 455B.115 – Analysis by certified laboratory required

2016 Iowa Code 455B.115 – Analysis by certified laboratory required

2014 Iowa Code 455B.115 – Analysis by certified laboratory required.

2009 Iowa Code 455B.115 – Analysis by certified laboratory required