DUI Blood Draws in PA: When Police Need a Warrant

Last updated October 4, 2026.

Blood tests sit at the center of many Pennsylvania DUI cases, especially drug cases, because a blood sample can show substances a breath machine cannot. That makes the question of how the blood was taken one of the first things to examine. This page explains the federal rule, the Pennsylvania statute built around it, and what can be done in Lawrence County when a draw was not lawful. For the rest of the defense picture, see the main DUI defense page.

How does a blood draw challenge move through Lawrence County?

A challenge to a blood draw has its own place in the case:

The request and the warnings. After a DUI arrest the officer asks for a chemical test and must give the warnings described below (75 Pa.C.S. 1547(b)(2)). What police may do earlier in the stop is covered in your rights during a traffic stop.
The draw itself. Blood is taken with consent, under a warrant or under an exception, and tested by a Department of Health approved lab or a State Police laboratory (1547(c)(2)).
Release and the complaint. When the most serious charge is a misdemeanor, Rule 519(B) usually has the officer release the person, file the complaint within 5 days and let a summons follow. The complaint goes to the district court for the place of arrest, which for Ellwood City is the office described in what to expect at the Ellwood City district court. Every stage after the arrest is laid out in what happens after a DUI arrest in Lawrence County.
The preliminary hearing. It is held at the county's Central Court, 202 Milton Street, New Castle, on Tuesdays, Wednesdays and Thursdays at 9:30 a.m. A suppression motion is normally made only after the case has been returned to court (Pa.R.Crim.P. 581(B)), so this hearing is not where the draw is decided; what it does decide is explained in what happens at a preliminary hearing in Lawrence County.
Arraignment and discovery. The case moves to the Court of Common Pleas at the Courthouse, 430 Court Street, New Castle. On request, the Commonwealth must disclose the results or reports of scientific tests in its possession (Rule 573(B)(1)(e)). The building and its offices are described in what to expect at the Lawrence County Courthouse.
The suppression motion and hearing. The motion goes in the omnibus pretrial motion, due within 30 days after arraignment (Rule 579(A)). The Public Defender describes a Call of Trial about a month after arraignment.

Deadlines that matter in a blood draw case
Step	Deadline	Rule
Complaint after release from a warrantless arrest	Within 5 days of release	Pa.R.Crim.P. 519(B)(2)
Motion to compel discovery the Commonwealth has refused	Within 14 days after arraignment, unless extended	Pa.R.Crim.P. 573(A)
Omnibus pretrial motion, including suppression	Within 30 days after arraignment, unless an exception applies	Pa.R.Crim.P. 579(A), 581(B)
Appeal of a PennDOT refusal suspension	Within 30 days of the mailing date of PennDOT's notice	PennDOT Driver's Manual
Start of trial	Within 365 days of the complaint, with some delay excluded	Pa.R.Crim.P. 600(A)(2)(a), (C)

What did the Supreme Court decide in Birchfield?

Taking blood or breath is a search under the Fourth Amendment. In Birchfield v. North Dakota, 579 U.S. 438 (2016), the Supreme Court of the United States asked whether either test fits the rule that lets police search a person incident to a lawful arrest, and split the two. The Court concluded that "the Fourth Amendment permits warrantless breath tests incident to arrests for drunk driving," because a breath test intrudes very little. Blood is different. Blood tests "are significantly more intrusive," the Court said, so "a breath test, but not a blood test, may be administered as a search incident to a lawful arrest for drunk driving."

The Court also spoke to drug cases. It noted that a blood test can detect substances other than alcohol, but said nothing prevents police from seeking a warrant when there is time, or from relying on the exigent-circumstances exception when there is not. It also limited implied consent: states may attach civil penalties and evidentiary consequences to a refusal, but "motorists cannot be deemed to have consented to submit to a blood test on pain of committing a criminal offense."

When can police draw blood without a warrant?

Blood draws after a DUI arrest: when a warrant is needed
Situation	Warrant needed?	Where the rule comes from
Breath test at the station after arrest	No	Birchfield, search incident to arrest
Blood draw after arrest, driver objects	Yes, unless an exception applies	Birchfield
Blood draw with the driver's consent	No, if the consent was voluntary	Birchfield, judged on the totality of the circumstances
Real emergency with no time to get a warrant	No, but it is decided case by case	Exigent circumstances; Missouri v. McNeely, as described in Birchfield and Mitchell
Driver unconscious and unable to take a breath test	Usually no, under the exigency rule	Mitchell v. Wisconsin (2019), opinion of four justices

Consent. Agreeing to a test is one reason a warrant is not needed, but the agreement has to be voluntary. In Birchfield, one driver agreed to a blood test after being told the law required it; the Court sent that case back so the state court could reevaluate his consent "given the partial inaccuracy of the officer's advisory." What the officer told you, and when, matters.

Emergencies. Alcohol leaves the blood over time, but the Supreme Court has held that this alone does not justify a warrantless blood draw in every drunk-driving case. Birchfield treated the question as one that needs "case-specific information."

Unconscious drivers. In Mitchell v. Wisconsin, four justices concluded that when a driver is unconscious and cannot be given a breath test, the exigency rule "almost always permits a blood test without a warrant." They left room for an unusual case where the driver shows the blood would not have been drawn but for the search for a blood alcohol result, and that police could not reasonably have judged a warrant application would interfere with other pressing duties.

What does Pennsylvania's implied consent law say now?

Pennsylvania still has implied consent. Anyone who drives in the Commonwealth is "deemed to have given consent" to chemical tests of breath or blood when an officer has reasonable grounds to suspect DUI (75 Pa.C.S. 1547(a)). After Birchfield, the legislature changed what follows a refusal:

The test is not forced. If a person under arrest for DUI refuses, "the testing shall not be conducted," and PennDOT suspends the license instead: 12 months, or 18 months with an earlier refusal suspension or DUI sentence (1547(b)(1)).
The warnings changed. The officer must say that a refusal brings a suspension and a restoration fee of up to $2,000, and that refusing a breath test can bring the higher criminal penalties of 3804(c) (1547(b)(2)).
The criminal enhancement is narrower. The higher grade and penalties for a refusal apply only where the person refused breath testing, or chemical testing under a valid search warrant, court order or other constitutional basis (75 Pa.C.S. 3803(b)(2), 3804(c)).
Warrants are still available. Nothing in section 1547 limits police from getting a test through a valid search warrant or court order (1547(b.3)).
A refusal still costs money and can be used as evidence. The restoration fee is $500 for a first refusal suspension, $1,000 for a second and $2,000 after that (1547(b.2)(1)), and the refusal may be introduced at trial (1547(e)).

The suspension is a civil matter with its own appeal, explained in appealing a PennDOT license suspension.

Why would police want blood instead of breath?

Usually because they suspect drugs. A breath machine measures alcohol only; a drug DUI under 75 Pa.C.S. 3802(d) depends on what is in the blood, and the Department of Health sets minimum levels a blood result must show before it is admissible in a Schedule I or nonprescribed Schedule II or III case (1547(c)(4)). Those charges, including prescriptions and medical marijuana, are explained in DUI for prescription pills or medical marijuana. The handheld device at the roadside is a separate thing again, described in roadside breath test versus the chemical test.

One statute that used to supply blood samples has been struck down. Section 3755 of the Vehicle Code told emergency room physicians to take blood from drivers in crashes when there was probable cause of DUI. The General Assembly's notes to that section record that the Supreme Court of Pennsylvania declared it unconstitutional on June 17, 2025, in Commonwealth v. Hunte.

What if my blood was drawn without a warrant?

The remedy is a motion to suppress. Under Pa.R.Crim.P. 581, the defense may ask the court to suppress evidence obtained in violation of the defendant's rights. The motion must state the evidence, the grounds and the facts with particularity (581(D)), and it is heard by the court of the county where the case is pending (581(C)), here the Court of Common Pleas in New Castle. The Commonwealth carries the burden of showing the evidence was lawfully obtained (581(H)), and a denial is binding at trial unless previously unavailable evidence surfaces (581(J)).

Timing is strict. A suppression issue not raised in the omnibus motion on time is treated as waived (581(B)). The same motion is how the defense challenges other evidence from the stop, such as items found in a vehicle search that lead to drug charges like those explained in simple possession versus possession with intent to deliver.

Can I get my own test or see the results?

You may have a physician of your choosing give an additional breath or blood test, and the result is admissible, though the police test is not delayed for it (1547(h)).
The results of any chemical test must be made available to you or your attorney on request (1547(g)).
If you are convicted or placed in ARD, you pay the cost of the testing, including the blood draw; if you are found not guilty or the charges are dismissed or withdrawn, the requesting authority pays (1547(g.1)).

What changes the answer?

These are the facts that decide whether a blood result stands, each with the rule behind it:

Whether you agreed, and what you were told. Consent must be voluntary, and an inaccurate advisory can undercut it.
Whether there was a warrant. Section 1547 does not limit testing under a valid warrant or court order (1547(b.3)), and refusing a warrant-backed test carries the higher penalties (3803(b)(2)).
Whether there was a real emergency. Exigency depends on the facts of the case, not on alcohol fading over time.
Whether you were unconscious. When a driver's unconsciousness or stupor requires a trip to the hospital before a breath test is possible, the Mitchell opinion lets police order a draw without a warrant in almost all cases.
Breath or blood. Refusing a breath test, or blood under a warrant, raises the criminal penalties; refusing a warrantless blood draw does not (3803(b)(2), 3804(c)).
Your history. An earlier refusal suspension or DUI sentence makes a refusal suspension 18 months instead of 12 (1547(b)(1)(ii)), as on a second DUI in Pennsylvania.
Time. The alcohol tiers measure blood alcohol within two hours after driving. A later sample can still establish the level if the Commonwealth shows good cause for the delay and that you did not drink or use a controlled substance between arrest and draw (3802(g)).

A worked example

For example, take a hypothetical driver (not a real case) arrested near Ellwood City on suspicion of DUI. The officer asks for blood without a warrant and gives the required warnings. The driver refuses.

The testing is not conducted (1547(b)(1)). With no earlier refusal or DUI sentence, PennDOT suspends the license for 12 months, restoration requires a $500 fee (1547(b.2)(1)(i)), and the refusal can be mentioned at trial (1547(e)). Because it was a refusal of a warrantless blood draw, it does not trigger the higher refusal penalties on a general impairment charge (3803(b)(2), 3804(c)).

Change one fact: had the officer obtained a warrant first, refusing that test would carry the higher penalties. And had the driver agreed after an inaccurate warning, the case would turn on a suppression motion filed within 30 days after arraignment (Rule 579(A)).

Common mistakes about blood draws

Assuming a blood refusal costs nothing. It still brings a 12 or 18 month suspension and a restoration fee (1547(b), (b.2)).
Assuming that agreeing ends the question. Consent has to be voluntary, and what the officer said matters.
Waiting until trial. A suppression issue not raised in the omnibus motion on time is waived (581(B)).
Letting the PennDOT appeal lapse. The refusal suspension runs on its own clock: PennDOT's manual says an appeal must be filed within 30 days of the notice's mailing date.
Not asking for the lab file. Test results are available on request (1547(g)), and the full reports through discovery (Rule 573(B)(1)(e)).

What to do this week

Write down, for your lawyer only, the timeline of the night: the stop, the arrest, what you were told about testing, and where and when blood was drawn.
Keep every form you were read or signed, and any hospital paperwork.
Ask for the test results in writing (1547(g)).
Look up the case on the UJS Portal and note the preliminary hearing date at Central Court.
If you may qualify for the Public Defender, apply at least two weeks before that hearing, as the office asks.
Open every PennDOT letter the day it arrives and write down its mailing date.
Do not drive on a suspended license.

Frequently asked questions

Can police hold me down to take blood?

Pennsylvania's statute says that when a person under arrest for DUI refuses, "the testing shall not be conducted" (1547(b)(1)). It also says nothing in section 1547 limits testing under a valid search warrant or court order (1547(b.3)).

Can I refuse the roadside breath test?

The handheld test before arrest is separate. An officer with reasonable suspicion may require it, but refusing it is not counted for the refusal suspension or as refusal evidence at trial (1547(k)).

Can the blood be tested for drugs as well as alcohol?

Yes. Implied consent covers tests for "the alcoholic content of blood or the presence of a controlled substance" (1547(a)). Birchfield also noted that a blood sample can be preserved and can reveal more than a blood alcohol reading.

Does it matter that I was taken to a hospital?

It can. Section 3755, which had emergency room physicians draw blood after crashes, carries the General Assembly's note that it was declared unconstitutional in June 2025. Separately, the Mitchell opinion allows a warrantless draw in most cases where an unconscious driver must go to a hospital before a breath test is possible.

I have an Ohio license. Does Pennsylvania's refusal suspension apply to me?

Implied consent covers anyone who drives "in this Commonwealth" (1547(a)). How a Pennsylvania suspension follows an out-of-state license is covered in an Ohio driver's DUI in Lawrence County.

If your blood was drawn after a DUI arrest in Ellwood City, Lawrence County or anywhere in Western Pennsylvania, the paperwork and the timeline of that night are worth reviewing before the motion deadline. You work directly with me, and the first consultation is always free and confidential.

Do police need a warrant to draw my blood for a DUI in Pennsylvania?