A suspected impaired-driving crash may generate breath-test records, blood or urine results, implied-consent notices, refusal affidavits, warrants, laboratory material, instrument and analyst records, body-camera video, court filings, and a later criminal disposition. A civil injury file should identify each item by source, date, person, test, and status rather than reducing the record to one reported number.

A reported alcohol concentration, refusal, toxicology result, officer observation, and DWI disposition are different pieces of evidence; none should be silently substituted for another.

Start with the exact criminal and testing identities

  • Driver’s legal name and date of birth, charging agency, officer, court county, case number, charge, citation, arrest date, and alleged driving time
  • Test type, request time, advisement time, collection or breath-sample times, location, operator or collector, instrument or kit, and reported result
  • Laboratory, accession or specimen number, analyst, report date, substances tested, result units, qualifiers, amendments, and recipients
  • Refusal, warrant, unconscious-person procedure, additional test, limited-privilege or DMV file, and current disposition
  • Preservation request, response, retention date, sample status, native files, certified copies, and unresolved gaps

Separate the impaired-driving definition from the evidence file

G.S. 20-138.1 defines impaired driving through specified alternative grounds. The chemical-analysis file may address one or more of those grounds, but the criminal court decides the charge from the admissible record. A civil claim still requires its own proof of the driving conduct, collision sequence, responsibility, medical causation, and loss.

Preserve the implied-consent notice and sequence

G.S. 20-16.2 addresses implied consent, notice of rights, requested testing, refusal, additional-test rights, and related license procedures. Preserve the written notice, oral advisement recording when available, time given, requested test, response, witness or attorney contact, affidavit, DMV notice, and any hearing record.

A refusal under the criminal or license process is not the same as an absent sample, an invalid result, a negative result, or proof of the collision. Record what was requested, what occurred, which procedure was used, and what the official disposition actually states.

Build the breath-test packet

G.S. 20-139.1 addresses approved methods, analyst permits, preventive maintenance, sequential breath samples, reports, blood and urine analyses, chain of custody, additional testing, and disposition of samples. For a breath test, identify the instrument, location, operator permit, maintenance record, observation and test times, air blank or simulator material when applicable, each breath sample, result selected under the statute, printed ticket, affidavit, and later correction.

Do not describe a breath instrument as accurate or inaccurate from the result alone. The current procedure, permit, maintenance, instrument record, sample sequence, operator actions, and admissibility ruling must be examined together.

Build the blood or urine packet

  • Legal authority or request, warrant when used, collection site, collector qualification, date and exact time, kit identity, tube or container, seal, preservative, and storage
  • Every transfer, receiving person, date, condition, shipping or courier record, laboratory receipt, accession, storage, opening, testing, and remaining sample
  • Method, calibration or quality material when available, analyst permit or qualification, raw data, result, uncertainty or qualifier, report, amendment, and certification
  • Medication, treatment, medical collection, transfusion, contamination allegation, or other fact raised by a qualified reviewer rather than assumed from the chart
  • Notice, objection, testimony, court order, admitted exhibit, excluded material, plea, trial result, dismissal, or appeal status

Track chain of custody without treating it as a slogan

G.S. 20-139.1 describes a statement-based procedure for establishing successive custody of blood or urine in specified proceedings. The civil file should still identify the actual sample, container, handlers, dates, condition, storage, laboratory process, and relationship to the reported result. A missing signature and a demonstrated sample mismatch are different issues.

Address retention before the sample disappears

The statute states that an analyzing agency may destroy a covered blood or urine sample at the time specified in subsection (h), unless a motion to preserve has been filed and remains unresolved by a dispositive order. The criminal defendant and counsel control decisions in that criminal case; an injured civil claimant should not assume a sample will remain available merely because a related claim exists. Record the custodian, statutory date calculation, preservation communication, motion status, order, and present sample condition.

Keep the criminal evidence and civil issues connected but separate

Create a cross-reference rather than copying conclusions. Link a chemical result to the exact driving time, collection time, tested person, method, report, criminal disposition, and any qualified interpretation. Then separately map the vehicle movement, traffic control, speed, attention, witness observations, crash mechanics, responsible parties, medical causation, insurance, restitution, compensatory loss, and any distinct punitive-damages allegation.

The related guide to criminal DWI proceedings and a civil injury claim explains how the two case paths use overlapping evidence but different parties, burdens, remedies, and deadlines.

Rosensteel Fleishman Car Accident & Injury Lawyers provides information about North Carolina car-accident claims involving suspected impairment. The chemical, criminal, collision, medical, and insurance records require issue-specific review.

Sources