South Carolina's rule on refusing a breathalyzer turns on a feature the national template does not capture: Refusal typically triggers a one-year (or longer) administrative suspension through DMV, separate from the criminal DUI. Breath refusal may be treated consistent with Birchfield; blood compulsion for criminal refusal penalties generally requires a warrant. The controlling authority is S.C. Code Ann. § 56-5-2950. South Carolina's implied-consent statute requires breath or blood testing upon lawful DUI arrest; refusal has administrative license consequences.
Key takeaways
- Primary authority: S.C. Code Ann. § 56-5-2950.
- Administrative hit: Refusal typically triggers a one-year (or longer) administrative suspension through DMV, separate from the criminal DUI.
- Criminal exposure: Breath refusal may be treated consistent with Birchfield; blood compulsion for criminal refusal penalties generally requires a warrant.
- Evidence: Datamaster/breath results and refusal evidence are commonly admitted in DUI prosecutions.
- Blood vs. breath: federal Supreme Court doctrine in Birchfield and McNeely still frames warrant rules.
Worked example under South Carolina law
The illustration below uses only rules already stated for South Carolina. It is a research hypothetical, not a prediction of what a court will do.
A driver is arrested for DUI in South Carolina and refuses the evidentiary chemical test after the implied-consent advisory.
- Identify the administrative consequence under S.C. Code Ann. § 56-5-2950: Refusal typically triggers a one-year (or longer) administrative suspension through DMV, separate from the criminal DUI.
- Separate that track from the criminal case: Breath refusal may be treated consistent with Birchfield; blood compulsion for criminal refusal penalties generally requires a warrant.
- Ask whether the refusal can be argued to the jury: Datamaster/breath results and refusal evidence are commonly admitted in DUI prosecutions.
- If the request is for blood rather than breath, apply the warrant rule: Breath is standard; blood is used for drugs, hospital cases, or when breath is unavailable, usually under warrant when compelled.
In South Carolina the refusal question is answered first by S.C. Code Ann. § 56-5-2950, then by the administrative deadline and the criminal case.
Implied consent in South Carolina
South Carolina's implied-consent statute requires breath or blood testing upon lawful DUI arrest; refusal has administrative license consequences.
Implied consent is not the same as a Miranda warning. Officers typically must advise of the consequences of refusal before requesting a chemical test. Failure to give a required advisory can affect whether the administrative suspension sticks — a frequent issue in South Carolina appellate opinions.
License suspension and administrative hearings
Refusal typically triggers a one-year (or longer) administrative suspension through DMV, separate from the criminal DUI.
The DMV / administrative track often runs separately from the criminal DUI case. Missing the short window to request an administrative hearing can lock in a suspension even if the criminal charge is later reduced or dismissed. Always calendar the administrative deadline the same day as the arrest.
Criminal consequences of refusal
Breath refusal may be treated consistent with Birchfield; blood compulsion for criminal refusal penalties generally requires a warrant.
Under Birchfield v. North Dakota, the Fourth Amendment allows criminal penalties for refusing a warrantless breath test incident to a lawful DUI arrest, but generally requires a warrant (or a recognized exception) before the State may impose criminal penalties for refusing a blood draw. Missouri v. McNeely rejected a per-se exigency based solely on natural dissipation of alcohol in the blood. South Carolina statutes and case law implement those federal baselines with local detail.
Can refusal be used as evidence?
Datamaster/breath results and refusal evidence are commonly admitted in DUI prosecutions.
Prosecutors often argue consciousness of guilt; defense counsel emphasize confusion, inadequate advisories, or medical inability to provide a sample. The precise jury instruction language is state-specific — search South Carolina opinions for “refusal” and “implied consent.”
Breath tests versus blood tests
Breath is standard; blood is used for drugs, hospital cases, or when breath is unavailable, usually under warrant when compelled.
Practical tip: a driver who refuses breath may still face a warrant-backed blood draw. Refusal does not create a permanent shield against chemical evidence; it mainly adds administrative (and sometimes criminal) consequences on top of the underlying DUI case.
Practical tips
- Ask whether the stop and arrest were lawful — implied consent usually requires a lawful DUI arrest first.
- Diary the administrative hearing deadline immediately.
- Do not confuse portable roadside breath screens with the evidentiary breathalyzer at the station; statutes often treat them differently.
- Research South Carolina opinions on implied consent, refusal, and license revocation in LawDiver before a contested DMV hearing.
Case law: implied consent and refusal in South Carolina
S.C. DEPARTMENT OF MOTOR VEHICLES (Formerly Public Safety), Appellant, v. Danny Joe NELSON, Respondent
…a DataMaster test. Officer K.D. Green advised Nelson of his implied consent rights both orally and in writing and *518 told Nelson that the testing was being videotaped. The machine was working properly, and Officer Green followed procedure in preparing to administer the test. At 1:20 a.m., Nelson refused to give a sample. Deputy Wilson returned to the Detention Center and foun…
Practitioners open S.C. DEPARTMENT OF MOTOR VEHICLES (Formerly Public Safety), Appellant, v. Danny Joe NELSON, Respondent when South Carolina implied consent / breathalyzer refusal turns on the distinction in this sentence: "DataMaster test. Officer K.D. Green advised Nelson of his implied consent rights both orally and in writing and *518 told Nelson that the testing was being videotaped. The machine was working properly, and Officer Green followed procedure in preparing to administer the test." Do not lift it out of the facts the court was deciding.
The STATE, Respondent, v. Vernon E. PARKER, Appellant
The STATE, Respondent, v. Vernon E. PARKER, Appellant, 271 S.C. 159 (1978)
…alyzer test. The use of such test is provided for under our implied consent statute, § 56-5-2950, 1976 Code. Under this statute, “Any person who operates a motor vehicle upon the public highways of this State shall be deemed to have given consent to a chemical test of his breath for the purpose of determining the alcoholic content of his blood if arrested for any offense arisin…
South Carolina opinions such as The STATE, Respondent, v. Vernon E. PARKER, Appellant are cited where implied consent / breathalyzer refusal is disputed. The court stated: "The use of such test is provided for under our implied consent statute, § 56-5-2950, 1976 Code." That is the language to brief; the rest of the decision supplies the procedural posture.
The STATE, Respondent v. Ernest Eugene BAKER, Appellant
The STATE, Respondent v. Ernest Eugene BAKER, Appellant, 310 S.C. 510 (1993)
…as able to provide a breath sample, in contravention of the implied consent statute, S.C. Code Ann. § 56-5-2950(a) (1991). The trial judge granted his motion. A jury found Baker guilty of driving under the influence. Baker made a post-trial motion to dismiss his conviction on the grounds that the police officer’s failure to offer Baker a breath test should have prevented the St…
South Carolina opinions such as The STATE, Respondent v. Ernest Eugene BAKER, Appellant are cited where implied consent / breathalyzer refusal is disputed. The court stated: "S.C. Code Ann. § 56-5-2950(a) (1991). The trial judge granted his motion. A jury found Baker guilty of driving under the influence." That is the language to brief; the rest of the decision supplies the procedural posture.
The STATE, Respondent, v. Gary James LONG, Jr., Petitioner
The STATE, Respondent, v. Gary James LONG, Jr., Petitioner, 363 S.C. 360 (2005)
…ble to give a breath sample. Driver relied upon the general implied consent statute, 2 which provides “the person must first be offered a breath test ... [unless] the person is physically unable to provide an acceptable breath sample because he has an injured mouth, is unconscious or dead, or for any other reason considered acceptable by the licensed medical personnel....” befo…
The STATE, Respondent, v. Gary James LONG, Jr., Petitioner is worth reading on South Carolina implied consent / breathalyzer refusal because the court put the point in its own words: "Driver relied upon the general implied consent statute, 2 which provides “the person must first be offered a breath test ..." Use that passage as the starting point, then read the facts that precede it.
John D. PEAKE, Appellant, v. SOUTH CAROLINA DEPARTMENT OF MOTOR VEHICLES, Respondent
…ce. Peake was read the Miranda rights and the Advisement of Implied Consent Rights. Trooper Manley then requested Peake provide a blood sample believing Peake’s *593 condition precluded a breath test. Peake stated he understood his implied consent rights and refused to submit a blood sample. Trooper Manley then issued Peake a Notice of Suspension which Peake refused to sign. Af…
John D. PEAKE, Appellant, v. SOUTH CAROLINA DEPARTMENT OF MOTOR VEHICLES, Respondent is worth reading on South Carolina implied consent / breathalyzer refusal because the court put the point in its own words: "Peake was read the Miranda rights and the Advisement of Implied Consent Rights. Trooper Manley then requested Peake provide a blood sample believing Peake’s *593 condition precluded a breath test." Use that passage as the starting point, then read the facts that precede it.
Suchart TAYLOR, Petitioner, v. SOUTH CAROLINA DEPARTMENT OF MOTOR VEHICLES, Respondent
…test, so he requested a blood sample. The officer read the implied consent form aloud to Taylor, but did not provide him with a written copy of the form. Taylor refused the blood sample and refused to sign the implied consent form; he was therefore issued a notice that his dx-iver’s license would be suspended for ninety days. Taylor filed for an administrative hearing to chall…
On implied consent / breathalyzer refusal, Suchart TAYLOR, Petitioner, v. SOUTH CAROLINA DEPARTMENT OF MOTOR VEHICLES, Respondent speaks to the South Carolina dispute in this passage: "The officer read the implied consent form aloud to Taylor, but did not provide him with a written copy of the form." The surrounding opinion shows how the court applied that language to the record.
The STATE, Appellant, v. Justin ELWELL, Respondent
The STATE, Appellant, v. Justin ELWELL, Respondent, 396 S.C. 330 (2011)
…Whether the waiting period is required can be traced to two implied consent cases. In State v. Parker, 271 S.C. 159, 245 S.E.2d 904 (1978), our supreme court fashioned a four-part test for laying a breath test foundation: Prior to admitting such evidence, the State may be required to prove (1) that the machine was in proper working order at the time of the test; (2) that the co…
Practitioners open The STATE, Appellant, v. Justin ELWELL, Respondent when South Carolina implied consent / breathalyzer refusal turns on the distinction in this sentence: "Whether the waiting period is required can be traced to two implied consent cases. In State v. Parker, 271 S.C. 159, 245 S.E." Do not lift it out of the facts the court was deciding.
Frequently asked questions
What happens if I refuse a breathalyzer in South Carolina?
Refusal typically triggers a one-year (or longer) administrative suspension through DMV, separate from the criminal DUI. Breath refusal may be treated consistent with Birchfield; blood compulsion for criminal refusal penalties generally requires a warrant.
Is refusal a separate crime in South Carolina?
Breath refusal may be treated consistent with Birchfield; blood compulsion for criminal refusal penalties generally requires a warrant.
Will the prosecutor tell the jury I refused?
Datamaster/breath results and refusal evidence are commonly admitted in DUI prosecutions.
Do I need a warrant for a blood draw?
Breath is standard; blood is used for drugs, hospital cases, or when breath is unavailable, usually under warrant when compelled. See also Birchfield and McNeely linked above.