2023 Iowa Code 321J.16 – Proof of refusal admissible

2022 Iowa Code 321J.16 – Proof of refusal admissible

2020 Iowa Code 321J.16 – Proof of refusal admissible

2018 Iowa Code 321J.16 – Proof of refusal admissible

2016 Iowa Code 321J.16 – Proof of refusal admissible

2014 Iowa Code 321J.16 – Proof of refusal admissible.

2009 Iowa Code 321J.16 – Proof of refusal admissible