Some Tennessee DUI blood-test results may remain pending for weeks or months because the sample must reach a laboratory, be documented, undergo the requested analysis, and result in a completed report. The type of testing requested and the laboratory’s workload can also affect how long the process takes.
Tennessee does not provide one guaranteed turnaround time for every DUI blood sample. A delay does not indicate that alcohol or drugs were found, and it does not mean the result will be negative. While the report remains pending, scheduled court proceedings and defense preparation may continue.
Why Is a DUI Blood-Test Result Not Immediate?
A blood draw and a completed laboratory report are separate events. The blood draw creates a physical sample, but the sample must be submitted to a laboratory before an official result can be produced.
The Tennessee Bureau of Investigation Forensic Services Division provides toxicology services involving alcohol, drugs, and poisons in biological samples. When an agency submits a DUI blood sample to TBI, it must follow TBI’s evidence-submission requirements.
Not every blood sample connected to a Tennessee DUI case must be analyzed by TBI. A hospital laboratory or another laboratory may be involved depending on how the blood was collected and the circumstances of the investigation. The source and significance of a result must be determined from the records in the individual case.
For a broader explanation of chemical testing, read our guide to BAC testing in Tennessee DUI cases.
What Can Cause a DUI Blood-Test Delay in Tennessee?
No single explanation applies to every delayed report. The time required can be affected by evidence submission, laboratory receipt, the examination requested, testing demand, and the work required to complete the report.
The Sample Must Be Submitted to a Laboratory
After a blood draw, the sample must move from the collection location or investigating agency to a laboratory. The submission may include the blood tubes, identifying information, packaging, and an examination request.
The date of collection is not necessarily the date the laboratory receives the sample. Agency processing, transportation, and evidence-submission procedures can create time between the blood draw and laboratory receipt.
The current TBI Evidence Guide directs agencies submitting toxicology samples to TBI to use the appropriate blood alcohol and toxicology collection kit. The guide also directs submitting agencies to complete the examination request clearly and submit samples to the laboratory serving their area.
These directions apply to evidence submitted to TBI. They should not be treated as a description of every hospital or private laboratory procedure.
The Laboratory Must Process the Submission
After receiving the sample, the laboratory must document the submission and complete the requested examination. Incomplete identifying information, unclear testing requests, or other submission issues may require attention before the requested analysis can be completed.
The records from an individual case may show the collection date, submission date, laboratory-receipt date, requested examination, and report date. Those records provide more reliable information about a specific delay than a timeline taken from another person’s case.
Alcohol and Drug Analysis Are Different
Testing for ethyl alcohol is not the same as conducting a broader toxicology examination for drugs or their metabolites. The work required depends on what analysis was requested and what the laboratory is equipped and authorized to examine.
An officer’s suspicion that a particular substance was involved does not establish that the substance will appear in the report. The identification of a substance also does not, by itself, establish when it was consumed or its effect at the relevant time.
The possibility of different testing does not establish that every sample will undergo both alcohol and drug analysis. The actual request and completed report must be reviewed.
Laboratory Workload Can Affect Completion
TBI laboratories receive evidence connected to DUI allegations and many other criminal investigations. Testing demand and laboratory capacity can affect how quickly forensic examinations are completed.
A 2025 report from the Tennessee Advisory Commission on Intergovernmental Relations examined Tennessee crime-laboratory backlogs and discussed the relationship between evidence volume, laboratory capacity, and forensic turnaround times.
Statewide information does not establish a deadline for an individual DUI sample. A target found in a government report, a timeline quoted online, or the experience of another defendant should not be treated as the expected completion date for a particular blood test.
How Long Do DUI Blood Results Take in Tennessee?
Tennessee does not publish one guaranteed turnaround time for every DUI blood test. Completion can depend on when the laboratory receives the sample, the examination requested, the laboratory’s pending workload, and the work required to produce the report.
For that reason, a lawyer, officer, or laboratory employee may be unable to provide a firm completion date.
Some results may remain pending for months. That does not create a presumption about the outcome of the test. It only means the completed report has not yet been produced or received by the person checking the case.
What Can Happen While the Blood Results Are Pending?
A scheduled court appearance may occur before the laboratory report is available. A person should continue following all court dates unless the court changes the schedule.
A prosecutor or defense lawyer may ask the court for additional time when material evidence remains pending. The judge decides scheduling requests under the procedures applicable to that case. A continuance is not automatic, and it does not establish that the report will be available before the next setting.
Any existing bond or release conditions remain in effect unless the court modifies them. A pending laboratory report does not cancel a court order.
How a case is handled can depend on the specific charge and local court procedures.
Can a DUI Case Continue Without the Blood-Test Result?
A DUI accusation may be based on evidence collected before the laboratory report is available. That evidence may include driving observations, video, statements, physical behavior, field sobriety exercises, or information documented by law enforcement.
The existence of that evidence does not establish that it is accurate, admissible, or sufficient to prove the charge. Those questions depend on the facts and legal issues in the individual case.
The State retains the burden of proving every element of the charged offense beyond a reasonable doubt. A pending test does not shift that burden to the accused person.
What Does the Delay Mean for the Result?
The length of the delay does not predict the result. A pending report does not mean alcohol or drugs were found, and it does not mean the sample will be negative.
Once a report becomes available, its significance depends on the charge, the examination performed, the substances or concentrations reported, and the other admissible evidence.
The reported result should be considered with the other records produced in the case. Collection, submission, testing, and documentation may require examination based on the individual facts. Learn more about challenging evidence in a Tennessee DUI case.
Can You Request a TBI Toxicology Report?
TBI provides an online process for a person whose sample was submitted to TBI for casework to request a TBI toxicology report. TBI states that it provides these results pursuant to Tennessee Code Annotated § 55-10-406.
Submitting a request does not establish that the analysis has been completed. The TBI request process also does not apply to results produced solely by a hospital or another laboratory.
A lawyer can seek laboratory reports and related materials through the procedures applicable to the pending criminal case. The correct method may depend on which laboratory performed the analysis and which agency possesses the records.
What Can Be Done While Waiting for DUI Blood Results?
Waiting for the laboratory report does not require waiting to review the rest of the case. Available reports, recordings, witness information, and the circumstances surrounding the stop, arrest, and blood draw can be examined before the toxicology result arrives.
Early review may help identify body-camera footage, surveillance recordings, medical records, dispatch communications, or witness information that should be requested. The availability and relevance of those materials depend on the facts of the case.
Once the laboratory report is produced, it can be evaluated with the evidence already collected. This allows the result to be considered in context instead of treated as an isolated number or list of substances.
Frequently Asked Questions About Pending Tennessee DUI Blood Results
Will a DUI Charge Be Dismissed If the Blood Results Are Late?
A delayed report does not automatically require dismissal. The effect of a delay depends on the facts, procedural history, evidence, and legal issues in the individual case. Court scheduling remains under the judge’s authority.
Do I Still Need to Attend Court If My Results Are Pending?
A person must follow the scheduled court date unless the court changes it. The absence of a completed blood-test report does not authorize someone to miss a required appearance.
Does a Long Delay Mean Drugs Were Found?
No. The length of the wait does not reveal the outcome of the analysis. A report can remain pending because of submission timing, the examination requested, testing demand, or the work required to complete the report.
Can I Check If My TBI Report Is Ready?
If the sample was submitted to TBI for casework, the person whose sample was submitted can use TBI’s online toxicology-report request process. The form does not guarantee that a completed report is already available.
Can a Lawyer Review the Case Before the Report Arrives?
Yes. Counsel can examine the available evidence, monitor the pending report, and address court proceedings before the laboratory analysis is completed.
Talk to a Tennessee DUI Defense Lawyer
Waiting for a blood-test report can make it difficult to understand the evidence or prepare for the next court date. There may still be important records to request and legal issues to examine while the analysis remains pending.
Davis & Hoss represents people facing DUI charges in Chattanooga and surrounding Tennessee communities. Contact the firm to discuss the pending charge, the circumstances of the blood draw, and the steps that may be available before the laboratory report is released.
This article provides general information and is not legal advice. Reading it does not create an attorney-client relationship. The facts, evidence, charges, and applicable court procedures can change the legal analysis in an individual case.