You are taken to a hospital after a car accident in Savannah, and the medical staff draws your blood. A few weeks later, you learn that prosecutors want to use those blood test results as evidence in a DUI case. You never agreed to give the police a blood sample, so how can they use your private medical records against you?
In Georgia, hospital blood test results can sometimes be used as evidence in a DUI prosecution, even when the testing was originally performed for medical treatment. However, police must follow applicable laws when obtaining medical records, and prosecutors must establish that the evidence is admissible. The way your blood was collected, tested, and documented can also affect how much weight the results carry in court.
Hospital Blood Tests and Georgia DUI Investigations
When someone arrives at an emergency room after a crash, doctors may order blood tests to check for alcohol, drugs, or other medical concerns. These tests help medical staff understand the patient’s condition and decide what treatment is needed.
Police may also request blood testing when they suspect a driver was operating under the influence. Although both tests involve blood samples, hospital testing and police-requested forensic testing are not always performed the same way.
Medical Blood Draws Versus Police-Requested Blood Tests
A hospital blood test is generally ordered to help diagnose or treat a patient. For example, doctors may check a patient’s alcohol level when evaluating confusion, loss of consciousness, or a possible head injury. The hospital’s priority is medical care rather than collecting evidence for a criminal case.
A police-requested blood test is intended to help determine whether a driver violated Georgia DUI laws. These samples are generally collected under procedures designed to support criminal evidence, including rules about who may draw blood and how samples are handled.
Georgia law allows qualified medical professionals and certain other authorized individuals to collect blood samples for DUI testing. Although hospitals are common collection locations, some detention facilities also have personnel who can perform blood draws.
Georgia’s Legal Blood Alcohol Limits
Under O.C.G.A. § 40-6-391, Georgia’s general blood alcohol concentration (BAC) limit for drivers 21 and older is 0.08%. Lower limits apply to drivers under 21 and commercial drivers.
However, a driver can still face a DUI charge without a BAC result at or above 0.08%. Georgia’s DUI less safe law allows prosecutors to pursue charges when alcohol or drugs made a person less safe to drive.
This means hospital blood test results may be relevant even when they do not establish a BAC above the legal limit. Prosecutors may combine those results with driving behavior, officer observations, and other evidence.
How Police Obtain Hospital Records After a DUI Arrest
Medical records are generally private, but that does not mean they can never be obtained during a criminal investigation. Hospitals must follow federal and state privacy laws when responding to requests for patient information.
The process used to obtain existing hospital records can differ from the process used to collect a new blood sample for police.
HIPAA, Search Warrants, and Medical Privacy
The Health Insurance Portability and Accountability Act (HIPAA) protects medical information from improper disclosure. However, HIPAA allows certain disclosures for law enforcement purposes when specific legal requirements are satisfied.
For example, investigators may seek a search warrant for hospital records containing blood alcohol test results. A judge must determine whether the warrant request meets the applicable legal standards, including probable cause.
Police cannot automatically access someone’s complete medical history simply because that person is suspected of DUI. The legal basis for obtaining records and the scope of the request both matter.
Existing Medical Records Versus a New Blood Draw
There is an important difference between obtaining records from a test the hospital already performed and requiring someone to undergo a new blood draw.
A warrant seeking existing records concerns information already collected during medical treatment. A warrant authorizing a blood draw involves collecting a physical sample from a person’s body, which raises separate Fourth Amendment concerns.
If a driver refuses a police-requested blood test, officers may seek judicial authorization for testing when permitted by law. Georgia’s implied consent rules under O.C.G.A. § 40-5-55 may also create driver’s license consequences for certain refusals.
Refusing a police-requested test does not automatically prevent prosecutors from seeking hospital records that were created independently for medical treatment.
Reliability of Hospital Blood Alcohol Test Results
Hospital blood tests can provide useful medical information, but they are not always identical to forensic tests performed for DUI investigations. Understanding the differences can help determine whether a particular result accurately reflects someone’s alcohol concentration while driving.
Several factors may affect how a hospital result should be interpreted, including the sample type, testing method, collection time, and laboratory procedures.
Serum, Plasma, and Whole-Blood Testing
Hospitals commonly test serum or plasma when measuring alcohol levels. Serum and plasma are liquid components of blood, while whole blood includes both liquid and blood cells.
Alcohol concentrations measured in serum or plasma are generally higher than concentrations measured in whole blood from the same person. Because of this difference, a hospital’s serum alcohol result should not automatically be treated as an equivalent whole-blood BAC result.
The distinction can matter when prosecutors attempt to compare hospital testing results with Georgia’s legal BAC thresholds. The type of sample, laboratory report, and method of interpretation should be carefully reviewed.
Enzyme Assays and Testing Errors
Hospitals often use enzyme assays to measure ethanol. These tests are useful for medical treatment, but they may differ from forensic laboratory methods used in criminal investigations.
Certain medical conditions, substances, or laboratory issues can interfere with some testing methods. However, an enzyme assay result is not automatically inaccurate simply because the test was performed at a hospital.
A defense review may consider whether the laboratory followed its procedures, whether quality controls were completed, and whether the result was confirmed through additional testing.
Timing and Blood Sample Collection
The time between driving and blood collection can affect how a test result relates to a DUI allegation. Alcohol concentration changes as the body absorbs and eliminates alcohol, so a sample taken well after a crash may not reflect the driver’s BAC at the time of driving.
The collection method can also matter. Hospitals may collect arterial or venous blood depending on the patient’s medical needs, and the type of sample may affect interpretation under certain circumstances.
These issues do not automatically make the test unusable. They may require additional medical or scientific analysis before the result can be fairly evaluated.
Chain of Custody and Blood Test Evidence in Georgia
Chain of custody refers to the documentation used to identify a sample and track what happened to it from collection through testing. In a DUI case, these records help establish that the blood being tested actually came from the defendant.
Proper documentation may include:
- The identity of the person who collected the sample.
- The date and time of collection.
- Sample labels and identification numbers.
- Seals and packaging used to protect the sample.
- Storage and refrigeration records.
- Transportation and laboratory receipt information.
- Records showing who handled the sample.
- Laboratory testing and quality-control reports.
A missing record or handling mistake may raise questions about the evidence. However, Georgia courts do not necessarily exclude a blood test simply because every person who handled the sample cannot be identified.
Georgia Case Law on Blood Sample Handling
In Schlanger v. State, 290 Ga. App. 407 (2008), the Georgia Court of Appeals considered a challenge involving the chain of custody for DUI blood evidence.
The case involved questions about how the sample was collected, labeled, sealed, transported, and received by the Georgia Bureau of Investigation laboratory. The defendant also challenged a nine-day delay associated with the sample’s transportation.
The court determined that the evidence established an adequate chain of custody. The delay alone did not require the blood test results to be excluded.
This decision illustrates an important distinction in DUI cases. Problems with evidence handling may affect whether a jury believes the results, even when the court allows the evidence to be presented.
Challenging Hospital Blood Test Evidence in a DUI Case
A hospital blood test result does not automatically prove that someone committed DUI. Prosecutors must still establish the elements of the offense, and the defense may challenge how the evidence was obtained or interpreted.
Some challenges concern constitutional rights, while others focus on scientific reliability or the connection between the test result and the alleged driving offense.
Legal and Scientific Defense Issues
Depending on the circumstances, a DUI defense may examine:
- Whether police lawfully obtained the hospital records.
- Whether a search warrant was supported by probable cause.
- Whether the records requested exceeded the lawful scope of disclosure.
- Whether the test measured serum, plasma, or whole-blood alcohol.
- Whether laboratory procedures or possible interference affected the result.
- Whether sample handling and chain-of-custody records were adequate.
- Whether the blood test was performed too long after the alleged driving.
- Whether the evidence supports the particular DUI charge.
The defense may seek medical records, laboratory documentation, and testimony from qualified witnesses to evaluate these issues. Some problems may support a request to exclude evidence, while others may be used to question its reliability at trial.
Admissibility Versus the Weight of Evidence
Admissibility concerns whether the judge allows evidence to be presented in court. The weight of evidence concerns how convincing that evidence is to the judge or jury.
For example, a court might admit a hospital blood test even when there are questions about storage or transportation. The defense may still explain why those issues make the result less reliable.
Georgia courts evaluate these questions under applicable evidence rules and case law. A potential testing problem is not a guarantee that the result will be suppressed or that the DUI charge will be dismissed.
Hospital Records in Criminal and Civil DUI Cases
Hospital records may become relevant in both criminal DUI prosecutions and civil lawsuits arising from motor vehicle accidents. However, the purpose of the proceedings and the procedures used to obtain evidence are different.
In a criminal case, prosecutors may use hospital blood test results to support allegations of impaired driving. The defense may challenge the records through constitutional arguments, evidentiary objections, or questions about scientific reliability.
In a civil lawsuit, an injured person may seek relevant medical records to help establish whether alcohol or drugs contributed to a collision. Records may be requested through subpoenas, discovery, or court orders, subject to applicable privacy protections and objections.
A request for medical records does not automatically give another party unlimited access to a person’s medical history. Courts may consider relevance, privacy, and the scope of the requested information.
Frequently Asked Questions About Hospital Blood Tests in Georgia DUI Cases
Can Police Get My Hospital Blood Test Results Without My Permission?
Police may be able to obtain hospital blood test results without your permission when they use a lawful process, such as a valid search warrant or another legally permitted method. HIPAA protects medical information but allows certain disclosures under specific circumstances. Whether the records were lawfully obtained depends on the facts and the legal authority used.
Can Hospital Blood Test Results Be Used if I Refused a Police Blood Test?
Yes, hospital blood test results may still be available as evidence even if you refused a separate police-requested test. A hospital may have collected blood for medical treatment independently of the DUI investigation. Whether prosecutors can obtain and use those results depends on the applicable privacy, search, and evidence rules.
Can a Hospital Blood Test Be Wrong?
A hospital blood test can be affected by testing errors, sample problems, or differences in how results are measured. Serum and plasma alcohol results may also differ from whole-blood results, which can matter when interpreting BAC evidence. The specific laboratory method and records must be reviewed before determining whether a result is unreliable.
Can My DUI Case Be Dismissed if the Hospital Blood Test Is Excluded?
Excluding a hospital blood test may weaken the prosecution’s evidence, but it does not automatically require dismissal. Georgia prosecutors may still rely on officer observations, driving behavior, witness testimony, and other evidence to pursue a DUI less safe charge. The outcome depends on the remaining evidence and the legal issues in the case.
Contact Jarrett Maillet J.D., P.C. for Georgia DUI Defense
Hospital blood test results can play a major role in a Georgia DUI case, but those results are not beyond challenge. Questions about medical privacy, warrants, laboratory procedures, and sample handling may affect whether the evidence can be used and how reliable it is. If you are facing DUI charges in Savannah or the surrounding area, Jarrett Maillet J.D., P.C. can review the evidence and help you understand your defense options. Call 912-713-3426 for a free consultation to discuss your case.
