July 16, 2026
Written and reviewed by George Napier, Founding Attorney at The Napier Law Firm, former Montgomery County Assistant District Attorney and Felony Chief Prosecutor.
State v. Momin shows that information about a forensic analyst’s quality incidents can matter when a Texas DWI case depends heavily on a contested blood result. It does not mean that every analyst mistake invalidates every test.
The Fourteenth Court of Appeals affirmed an order granting a new trial because undisclosed investigations into the DPS analyst’s work were favorable and material under Brady v. Maryland in the specific record before the court. The non-blood evidence was disputed, the defense had already challenged the draw and chain of custody, and the analyst’s other mistakes could have strengthened the challenge to his competence and work product.
A later Texas Forensic Science Commission report addressed related allegations under a different administrative standard. The Commission concluded that the analyst’s failure to disclose the two pending quality incidents in Momin did not constitute professional negligence or misconduct. Those conclusions are not inconsistent once the proceedings and legal standards are kept separate.
What happened in State v. Momin
Momin arose from a Fort Bend County DWI prosecution. According to the appellate opinion, the officer stopped the driver after he remained at a green light for a few seconds and the officer learned that the vehicle registration had expired. The officer later reported signs he associated with intoxication and arrested the driver.
The driver declined to provide a breath or blood sample. Police obtained a search warrant, and a nurse drew blood. The State alleged that the blood analysis showed an alcohol concentration of 0.15 or more.
The blood evidence was not a side issue at trial. The defense moved to suppress it and challenged the reliability of the result. The disputed issues included blood-draw procedure, conflicting dates on the toxicology request and chain-of-custody report, a possible gap in the evidence trail, and whether the blood had been refrigerated.
The jury convicted the driver. After trial, the defense learned that the same DPS analyst had quality incidents under review in other cases. The disclosed matters included two instances in which blood kits and tubes contained information associated with different cases and an incident involving improperly sealed evidence. The defense moved for a new trial.
The trial court held a hearing and granted the motion. Its order stated that there was no evidence of prosecutorial misconduct, but that the DPS investigations could have been used as mitigation or exculpation evidence and could have affected the court’s consideration of the suppression request. The State appealed.
On June 11, 2026, the Fourteenth Court of Appeals affirmed the new-trial order in State v. Momin, No. 14-25-00020-CR.
Why the appellate court found the information favorable
Brady requires disclosure of evidence that is favorable and material to the defense. Favorable evidence includes impeachment evidence that can challenge a government witness.
The State argued that the quality incidents were not favorable because the defense had already argued that the analyst could have made a mistake in Momin. The court rejected that position. It explained that actual information about the analyst’s subpar work and evidence-handling mistakes could have allowed more persuasive questioning about his competence, work product, and the reliability of the blood result.
The court also rejected the argument that the evidence was only an attack on the analyst’s general character for truthfulness. The proposed use was narrower: to expose mistakes, challenge competence and work product, and test the reliability of the blood evidence.
That distinction matters. A general accusation that an analyst is untrustworthy is not the same as evidence of specific quality incidents connected to the type of reliability issue disputed at trial.
Why the court found the evidence material in this case
Materiality depends on the full record. The question is whether there is a reasonable probability that disclosure would have produced a different result, meaning a probability sufficient to undermine confidence in the outcome.
The court compared Momin with Diamond v. State, a case involving a different laboratory incident and much stronger non-blood evidence of intoxication. In Momin, the court described the evidence as far from strong and intoxication as hotly contested.
The opinion noted evidence that the driver had been driving normally, committed no moving violation, drove at the proper speed, did not swerve, and stopped correctly at a red light. It also discussed disputes about field-sobriety-test administration and the officer’s observations.
At the same time, the defense had already raised specific concerns about the blood draw, contamination, chain of custody, refrigeration, and conflicting dates. Evidence that the analyst had missed blood-kit and blood-tube discrepancies in other cases could have supported more forceful cross-examination on those existing issues.
The court did not announce that quality incidents are always material. It affirmed the trial judge under the record and standard of review before it.
What the Texas Forensic Science Commission later found
The TFSC’s final report on Complaint No. 24.45, dated October 24, 2025, examined a broader set of allegations involving the DPS analyst’s disclosure responsibilities and testimony in Momin and other cases.
The report confirmed that two pending quality incidents were not disclosed to the prosecution or defense in Momin. It also noted that the Fort Bend trial court later granted a new trial. But the Commission was applying its administrative definitions of professional negligence and professional misconduct—not deciding the Brady appeal.
On the nondisclosure issue, the Commission concluded that the analyst’s failure to disclose the two pending quality incidents in Momin did not constitute professional negligence or misconduct. The report pointed to the plain language and interpretation of the DPS disclosure policy and found that the facts did not satisfy the Commission’s definitions for those findings.
The Commission nevertheless said the complaint created an opportunity for DPS and other accredited laboratories to revisit policies governing disclosure of pending quality incidents. Its report also addressed separate allegations and findings concerning testimony and bias in other proceedings. Those matters should not be collapsed into the appellate court’s narrower Momin holding.
The practical lesson is precision:
- The trial court granted a new trial under the facts before it.
- The court of appeals affirmed that order under Brady and the applicable appellate standard.
- The TFSC separately found no professional negligence or misconduct for the failure to disclose the two pending QIs under its administrative definitions.
Each statement can be true at the same time.
What a defense lawyer should examine
Momin is a reminder that a DWI blood case involves the sample, the process, the people, and the State’s disclosures.
A case-specific review may include:
- the stop and the non-chemical evidence of intoxication;
- the warrant or consent issue;
- blood-draw procedure;
- tube labels, seals, and submission records;
- chain-of-custody and refrigeration records;
- the complete analytical batch and governing method;
- analyst qualifications, testimony history, and relevant quality incidents;
- technical and administrative review records; and
- whether favorable or impeachment information was disclosed when required.
The connection matters. A quality incident from another case is not automatically relevant to the result under review. Its value may depend on whether it involves the same analyst, discipline, procedure, laboratory, time period, or type of problem—and whether it connects to a disputed issue already present in the case.
The blood-test science still requires a separate review
Momin focused on disclosure and analyst-quality information. It should not be stretched into a general explanation of headspace gas chromatography or every possible laboratory issue.
For a detailed discussion of collection, specimen handling, calibration, controls, chromatograms, duplicate testing, reporting, and the records behind a Texas DWI blood result, read Texas DWI Blood Test Errors.
How The Napier Law Firm can help
A reported blood number should be tested against the full record. The Napier Law Firm reviews the stop, warrant, draw, custody and storage records, laboratory data, analyst information, and the State’s disclosures to identify issues that are actually supported by the evidence.
If you are facing a DWI charge in Houston, Fort Bend County, Harris County, Montgomery County, Conroe, or the surrounding area, call (713) 470-4097 or request a free consultation.
This article provides general educational information and is not legal advice. Reading it does not create an attorney-client relationship. The relevance of a laboratory or disclosure issue depends on the facts, law, procedure, and posture of the particular case.
Related Napier Law resources
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