The Hoover Firm, LLC Titlebar

The Honest Guidance You Need To Best Protect Your Rights

Can I Refuse a Breathalyzer or Blood Test if Pulled Over for Suspicion of DUI in Pennsylvania?

On Behalf of |Jan 07, 2026

| Drunk Driving

Were you stopped for a suspected DUI in Harrisburg or elsewhere in Pennsylvania? It is imperative that you know your rights and your responsibilities regarding breath tests and blood tests. Pennsylvania has an implied consent law. That means that you cannot refuse a post-arrest breath test or blood test without facing penalties. A DUI defense lawyer in Harrisburg can help ensure your rights are protected if you refuse a breath test or a blood test in Pennsylvania.

The Commonwealth has an implied consent law. Under Pennsylvania law (75 Pa.C.S. § 1547), any person who drives on a public roadway is deemed to have given implied consent to chemical testing if he or she is lawfully arrested for DUI. To be clear, the implied consent law applies to breath tests, blood tests, and urine tests. The statute does not require advance consent at the roadside by the driver. In Pennsylvania, consent is implied by the mere act of driving.

Note: Implied consent only applies after a lawful DUI arrest. Before arrest, an officer may request a preliminary breath test. However, that roadside screening test is voluntary. There is no automatic penalty for a refusal of a pre-arrest roadside breathalyzer test in Pennsylvania.

What Happens if You Refuse a Breath/Blood Test in Pennsylvania?

Refusing a post-arrest chemical test triggers automatic, immediate administrative (civil) penalties. Indeed, PennDOT can and will move to impose a license suspension based on a blood test/breath test refusal even if no DUI conviction ever occurs. A first refusal results in a one-year suspension. A second or subsequent refusal leads to an 18-month suspension. These penalties apply automatically.

A key point drivers should know is that refusal does not stop the criminal DUI case from moving forward. You can still be charged with a criminal DUI even without ever taking a chemical test. Indeed, prosecutors may introduce evidence of refusal at trial to argue consciousness of guilt. Beyond that, a refusal exposes the driver to enhanced DUI penalties if convicted.

Search Warrants, Blood Draws, and Practical Defense Consequences

Refusal does not always end chemical testing. Police may seek a search warrant for a blood draw, particularly in serious crashes or repeat offenses. If a warrant is issued, medical personnel may legally obtain a blood sample without consent. The refusal penalties still apply, and the Commonwealth gets access to the test results. However, police officers generally only move for a blood draw without consent in limited cases that are possible felony DUIs. A serious crash is the most common example.

Contact Our Harrisburg, PA DUI Defense Lawyer Today

At The Hoover Firm, LLC, our Harrisburg DUI defense attorney is standing by, ready to protect your rights and your interests. If you have any questions about breath test or blood test refusals, we can help. Contact us today for your completely confidential initial consultation. From our Harrisburg law office, we defend DUI charges throughout the region in Pennsylvania.