It is 1 a.m. at the station, and the breath test machine just printed a number above 0.08%. You had a few beers on Shem Creek hours earlier, and the reading feels wrong. For many drivers, that number puts a job, a paycheck and a clean record on the line. South Carolina gives you a tool many people never hear about: the right to request your own independent test. Here is how that right works, what assistance officers must provide and what limitations you should understand.
Your right to an independent test in South Carolina
Under South Carolina law, driving in the state means you have agreed to chemical testing if officers arrest you for driving under the influence (DUI). Officers generally offer a breath test first. Before testing starts, they must tell you in writing and out loud that you may have a qualified person of your choosing perform additional chemical tests at your own expense.
This is usually a blood draw at a medical facility, which measures your blood alcohol concentration (BAC) directly. The independent result gives you another piece of evidence to compare with the state’s reading. An independent test adds evidence next to the state’s result. Declining the breath test is a separate choice with its own consequences, often including a license suspension.
The officer’s duty to help you get tested
Knowing the right exists helps only if you can act on it while in custody. Under South Carolina’s implied consent statute, the arresting officer must provide “affirmative assistance” once you ask. At a minimum, that means taking you to the nearest medical facility that performs blood alcohol tests. If the facility draws your blood but fails to test it, the State Law Enforcement Division (SLED) must test the sample and share the result with you and the officer.
This requirement can have significant consequences for the state’s evidence. If you ask for help getting an independent test and the officer fails to provide it, the state generally cannot use the breath test result in court or at your license hearing. Whether this rule applies often depends on the specific circumstances, including the wording of your request and the officer’s response.
Limits and risks of requesting your own test
An independent test is not a guaranteed win. You pay for it, and the result could confirm the breath reading or even come back higher. Timing matters too, because your BAC continues to change as your body processes alcohol. State law requires officers to collect a breath sample within two hours of arrest and other samples within three hours, so a substantial delay may make the two results more difficult to compare.
Still, state law generally prevents prosecutors from using your request, or your choice not to request a test, against you. For that reason, requesting independent testing usually creates little additional legal risk.
Your next step after a breath test arrest
If you face a breath test after an arrest, clearly ask for an independent test and keep track of when you made the request and how the officer responded. Those details can shape whether the breath result holds up later. Because every stop unfolds differently, talking with a DUI defense attorney soon after your arrest can help you understand how the testing process may affect your case and what options remain available.
