By John Mahoney · Founder, MedLegal AI · May 19, 2026
A traditional Daubert workup on a plaintiff expert — the kind that survives defense exclusion motions in 2026's post-FRE 702 amendment environment — takes a senior associate two to three weeks of full-time work. Methodology articulation, alternative-cause analysis, peer-reviewed citation mapping, qualifications documentation, application-to-facts walk-through. Each step needs review and revision.
This is the 90-minute version using AI. The output is a defensible Daubert-ready expert report, audited against the six failure patterns that account for the majority of plaintiff-expert exclusions under post-2023 FRE 702.
Why 90 Minutes Is Possible Now
Three things changed in the AI tooling between 2023 and 2026:
PubMed-grounded citation. Earlier legal AI tools (the famous Mata v. Avianca case from 2023) fabricated case citations. Modern medical-legal AI tools resolve every cited study against PubMed's actual abstract before including it in the report. The hallucination risk is dramatically lower if the tool architecture is right.
FRE 702 amendment training. The 2023 amendment formalized that reliability is admissibility, not weight. Tools built post-amendment train against the actual exclusion patterns courts have applied. The six failure modes are well-mapped.
Real-time PubMed cross-checking. The methodology articulation step is fast when the tool can query PubMed live and verify that a given methodology has the peer-review citation density to survive a Walsh-grade challenge.
The 6 Failure Patterns You're Auditing Against
Before the 90 minutes start, know what you're auditing. Defense Daubert motions against plaintiff experts cluster around six patterns in 2026:
Methodology not named. Expert says "I reviewed the records and concluded the standard of care was breached" without naming the diagnostic framework used. Defense moves to exclude as "ipse dixit" opinion.
Alternative causes not addressed. Expert opines on causation without ruling out plausible alternative causes. Defense argues the methodology has an "analytical gap" under Sargon / Accutane.
Qualifications mismatch. Expert is in the wrong subspecialty (emergency-med opining on neurology, family practice on cardiology). MCARE § 1303.512 in PA, Buck v. Henry in NJ, similar in most states.
Foundation reliance on unpublished sources. Expert cites internal hospital guidelines without peer-reviewed support. Defense argues no general acceptance.
Application-to-facts disconnect. Methodology is sound, but expert doesn't show how it applies to this case's specific facts. Daubert / Lanigan requires the application step.
Standard of care without named source. Expert says "the care fell below standard" without citing a published standard, professional guideline, or specific text. Rivera Rodriguez v. Hospital San Cristobal (1st Cir. 2024) is the cautionary case.
The 90-minute workup audits the expert report against all six. If any fails, you fix it before the report is filed.
Minutes 0-15: Upload + Initial Scan
Step 1. Upload the expert's draft report and CV to MedLegal AI's Daubert workup tool. The tool extracts the expert's stated qualifications, the methodology section, the alternative-cause analysis section, and the substantive opinion. This is OCR + structured extraction; takes about 90 seconds for a 30-page report.
Step 2. Run the initial Daubert audit. The tool flags any of the six failure patterns. Most reports we've audited fail two or three patterns on the first pass. The output is a pattern-by-pattern severity score: PASS / WEAK / FAIL.
Minutes 15-45: Methodology Articulation
Step 3. For each FAIL or WEAK methodology pattern, the tool surfaces the methodology by name (e.g., "differential diagnosis under modified Naranjo algorithm" instead of "clinical judgment") and identifies the published citations that anchor the methodology. PubMed-grounded; every citation has a PMID.
Step 4. The tool produces a draft methodology section that:
Names the methodology
Cites the peer-reviewed source establishing its general acceptance
Walks the methodology in named steps
Maps each step to a specific source in the case record
You review and edit. Expect 15-20 minutes of attorney review.
Minutes 45-65: Alternative-Cause Analysis
Step 5. The tool generates the differential-diagnosis matrix — every plausible alternative cause for the alleged harm, ruled in or ruled out with record-cited support. The "ruled-out" reasoning is what defense will probe; the tool produces it with the citation density required.
Step 6. You add any case-specific alternative causes the tool missed (it's good but not perfect at picking up jurisdiction-specific clinical traditions). Each addition gets the same ruled-in/ruled-out treatment.
Minutes 65-80: Qualifications + Foundation
Step 7. The tool maps the expert's CV against the defendant's specialty. It flags any subspecialty mismatch. If the expert is in a related-but-not-identical specialty, it produces the "substantially familiar with the applicable standard" carve-out language with the supporting record (training, publications, active practice in the specific clinical area).
Step 8. Foundation audit. Every source the expert cites is checked for peer-reviewed status. Internal hospital guidelines get flagged. The tool produces a "publication record" appendix that lists every cited source with PMID and journal impact factor.
Minutes 80-90: State-Specific Posture
Step 9. The tool maps the report against the jurisdiction's specific reliability framework — PA Walsh, CA Sargon, NJ Accutane, NY Frye-Parker, FL post-2019 Daubert, TX Robinson, MI MRE 702. The output is a state-specific compliance summary: where the report meets the state's bar and where it falls short.
Step 10. Final readiness gate. The tool produces a single "Daubert-ready / Daubert-vulnerable" verdict with the specific weaknesses listed. You decide whether to file the report as-is, have the expert revise, or retain a backup expert.
What You Have at Minute 90
Five artifacts:
Audited expert report with the six-pattern failures fixed.
Methodology section with named steps and peer-reviewed citations.
Differential-diagnosis matrix for the alternative-cause analysis.
Qualifications documentation mapped to the defendant's specialty.
Jurisdiction-specific compliance summary for the trial court.
This is what a senior associate produces in 2-3 weeks. With AI assistance and attorney review, 90 minutes.
What the AI Doesn't Do
The AI doesn't replace the attorney's judgment on:
Whether the expert is the right expert. (Subspecialty match is a yes/no the AI can flag, but the strategic question of which expert to retain is yours.)
Whether to file the report or have the expert revise. (Risk-tolerance decision.)
How aggressively to defend the methodology at the Daubert hearing. (Trial strategy.)
Whether the case is worth the workup expense in the first place. (Case-selection economics.)
The AI is a force multiplier on the work product, not a substitute for the attorney.
Try It on Your Current Expert
Run a free Daubert workup on your current expert. Three minutes for the first-pass audit. If the audit identifies failure patterns, the full 90-minute workup is available on the $49 case-screen tier or $499/mo unlimited.
MedLegal AI is software, not a law firm. We do not provide legal advice and no attorney-client relationship is created by use of this service. All outputs are AI-generated and must be independently reviewed by a licensed attorney before use in any legal proceeding, expert report, or client communication.
Most legal AI is wrong 17–33% of the time. Watch MedLegal AI pin every finding to the exact record page — click any citation and it jumps to the line that proves it.