Introduction

Of the approved breath testing devices in South Carolina, only one holds legal standing in court: the DataMaster DMT breathalyzer. Drew Carroll has trained on it specifically through the National Patent Analytical Systems certification course, a credential that positions him to dissect the very machine used against his clients. Operating from 44C Markfield Drive in Charleston, South Carolina, Carroll Law Firm offers around-the-clock access at (843) 737-4245 for those facing DUI charges.

With more than 23 years focused entirely on DUI defense and over a thousand cases resolved, the firm is not a general practice that handles DUI on the side. It is a specialized practice built from the ground up to address the science, procedure, and legal strategy that DUI cases require.

Practice Areas

Carroll Law Firm concentrates on a single, demanding area of criminal law: DUI defense. This focus allows for a depth of knowledge that general criminal defense practices rarely develop.

DUI charges in South Carolina carry consequences that extend well beyond traffic court. A conviction can affect employment, professional licensing, auto insurance rates, and the right to drive. Prosecutors in these cases benefit from specially trained DUI Task Force officers who follow specific protocols designed to build airtight arrest records. An effective defense requires matching that specialization with equal preparation.

The firm challenges cases at multiple levels. Breathalyzer reliability is a primary target. The DataMaster DMT is the only state-approved breath testing device, and Carroll holds specific training in its operation, calibration standards, and known failure points. A device that has not been properly maintained or calibrated produces results that should not be treated as conclusive.

Field sobriety tests face similar scrutiny. Carroll completed NHTSA’s Standardized Field Sobriety Test course, the same training administered to law enforcement. Understanding the standardized administration procedures makes it possible to identify when officers deviate from protocol, which can undermine the evidentiary value of the test results.

For cases involving suspected drug impairment, Carroll completed the IACP Drug Recognition and Evaluation Course. This training governs how DRE officers assess drug influence, and knowing the evaluation process from the inside creates avenues to challenge the conclusions drawn.

Attorney Profiles

Drew Carroll founded and leads Carroll Law Firm. His practice began in DUI defense more than two decades ago and has not broadened to other areas. This singular focus has produced a resume of specialized credentials rare in South Carolina criminal defense.

Carroll holds certification from the National Patent Analytical Systems course covering the DataMaster DMT breathalyzer. He completed NHTSA’s Standardized Field Sobriety Test training and the IACP Drug Recognition and Evaluation Course. These are the same technical programs that train law enforcement and forensic specialists, applied here to build the opposing argument.

Over his career, Carroll has resolved more than a thousand DUI cases through trial victories and pretrial negotiations. The pretrial path matters: many DUI cases turn on procedural grounds rather than courtroom verdicts, and Carroll’s technical knowledge feeds both tracks.

His 24-hour availability reflects the practical reality of DUI arrests. Most occur late at night or on weekends. Having immediate access to an attorney in the hours after arrest can affect what statements are made, whether a breath test is taken, and how the early stages of a case are handled.

Location and Service Area

Carroll Law Firm operates from 44C Markfield Drive in Charleston, South Carolina. The practice serves clients facing DUI charges in Charleston and the surrounding region.

Charleston’s legal landscape for DUI cases involves courts that regularly handle cases prosecuted by officers trained in DUI enforcement techniques. The combination of specialized prosecutors, trained task force officers, and the state-mandated DataMaster DMT creates a specific evidentiary environment that Carroll’s background directly addresses.

For immediate assistance, the firm is reachable at (843) 737-4245 at any hour. The website is carrolllawfirm.net/

Client Focus

Carroll Law Firm represents individuals charged with DUI in South Carolina. The firm does not represent insurance companies or prosecuting agencies. Every client on the firm’s docket is a person whose license, freedom, and record are at stake.

DUI cases attract clients from a wide range of backgrounds. A first-time charge can follow a single incident that the client never anticipated would become a legal matter. Repeat charges carry escalating consequences under South Carolina law. In both situations, the difference between conviction and dismissal often lies in the technical details of how the stop was conducted, how field tests were administered, and whether the breathalyzer produced reliable results.

Carroll’s client relationships begin with that 24-hour availability. A call in the middle of the night is not an inconvenience but an expected part of the work. From initial contact through resolution, the firm treats each case as the serious criminal matter it legally is.

Frequently Asked Questions

What makes the DataMaster DMT knowledge relevant to a DUI defense?
The DataMaster DMT is the only breath testing device South Carolina courts accept. If the machine was not properly maintained, calibrated, or operated according to established protocols, its results can be challenged. Carroll’s specialized training in this specific device allows him to examine the machine’s records and operation with technical precision that general defense attorneys may lack.

What happens during a field sobriety test that an attorney can challenge?
NHTSA establishes specific administration procedures for each standardized field sobriety test. If an officer deviates from those procedures, the test results may not meet the standards required for evidence. Carroll completed the same NHTSA training that law enforcement officers receive, so he knows exactly what proper administration looks like and where deviations occur.

Is 24-hour availability actually meaningful for a DUI arrest?
Yes. Decisions made in the hours immediately following a DUI arrest, including whether to submit to further testing and what statements are provided, can affect the entire trajectory of a case. Having attorney guidance available at the moment of arrest is a substantive legal advantage.

Does the firm handle cases beyond DUI?
Carroll Law Firm focuses on DUI defense. This specialization is deliberate. The science and procedural knowledge required for effective DUI defense differs from general criminal defense practice.

Closing

DUI defense in South Carolina is a technical legal discipline that intersects criminal law, forensic science, and law enforcement procedure. Drew Carroll’s training on the DataMaster DMT, NHTSA field sobriety standards, and the IACP Drug Recognition and Evaluation process reflects over two decades of investment in that intersection.

Carroll Law Firm is available at any hour at (843) 737-4245, operating from 44C Markfield Drive in Charleston, South Carolina. Additional information is available at carrolllawfirm.net/