If you litigate medical or scientific cases in Florida, every expert you retain has to clear the same gate before a jury hears a word of their opinion: a Daubert challenge. The standard governs which expert testimony is admissible — and getting it wrong can collapse an otherwise strong case at the worst possible moment.

This is a practical primer for Florida attorneys: what Daubert actually requires, the five factors judges weigh, and what to look for in an expert to insulate their testimony from a successful challenge.

Florida's adoption of Daubert

Florida adopted the Daubert standard in 2013 through an amendment to Section 90.702 of the Florida Evidence Code, replacing the older Frye "general acceptance" test. After a few years of back-and-forth between the Legislature and the Supreme Court, the Court formally adopted Daubert in In re: Amendments to Florida Evidence Code, 278 So. 3d 551 (Fla. 2019). Today, Florida state and federal courts apply Daubert to all expert testimony — medical, engineering, accounting, and beyond.

The shift matters. Under Frye, the question was whether the expert's methodology was "generally accepted" in the relevant scientific community. Daubert raises the bar: the judge becomes a gatekeeper, charged with evaluating both the reliability and the relevance of the proposed testimony.

The five Daubert factors

The Supreme Court in Daubert v. Merrell Dow Pharmaceuticals, 509 U.S. 579 (1993), set out a non-exhaustive list of factors trial courts weigh when assessing reliability. They aren't a checklist — judges have wide discretion — but every Florida attorney should be able to address each one for any expert they intend to call.

  1. Testability. Can the expert's theory or technique be tested, and has it been? An opinion grounded in a methodology that cannot, in principle, be falsified is suspect.
  2. Peer review and publication. Has the methodology been subjected to peer review? Publication isn't dispositive — but its absence is a question your opposing counsel will absolutely ask.
  3. Known or potential error rate. What's the rate of error of the technique, and are there standards controlling its operation? This is especially important for diagnostic tests, forensic methods, and quantitative analyses.
  4. General acceptance in the scientific community. The old Frye standard didn't go away — it survives as one factor among many under Daubert. An opinion built on fringe methodology faces a steep climb.
  5. Whether the expert developed the theory for litigation. Methodology developed independently for clinical or research purposes carries more weight than methodology created specifically to support a case.
Florida courts have been increasingly willing to exclude expert testimony at the Daubert stage in the years since the standard was formally adopted. A motion in limine on Daubert grounds is no longer a longshot — it's standard practice.

What makes a medical expert "Daubert-proof"

You cannot fully insulate an expert from a challenge — opposing counsel will file one if there's daylight. But a well-chosen expert makes the challenge much harder to win. In our experience matching physicians to Florida cases, the experts whose testimony consistently survives Daubert challenges share these traits:

Clinical practice tied to the opinion

An expert who actively practices in the specialty they're opining on — rather than a career expert who hasn't seen a patient in a decade — has an easier time grounding their opinion in current standards of care. Judges notice the difference.

Board certification in the right field

Board certification in the relevant specialty is not legally required, but it's the first thing opposing counsel will probe. If your case turns on spinal injury, your expert should be a board-certified orthopedic or neurosurgeon — not a general practitioner with a passing interest.

Published, peer-reviewed work

An expert with peer-reviewed publications in the area of testimony has a built-in answer to factor two. Even a handful of relevant articles signals to the court that the methodology has been tested against the broader scientific community.

Methodology that predates the case

Factor five — was the theory developed for litigation? — is where less experienced experts often stumble. The strongest experts can point to clinical guidelines, training, and prior published work showing they were applying the same methodology long before they were retained.

Prior testimony experience without disqualifications

Experts who have testified before are not automatically more credible, but they have a track record. Check for prior Daubert exclusions in their depositions — those rulings tend to follow an expert around.

Common Daubert pitfalls in medical cases

A few recurring mistakes we see in Florida medical litigation:

  • Stretching outside the specialty. An ER physician opining on neurosurgical standard of care invites a motion to exclude. Match the expert to the specialty at issue.
  • "Ipse dixit" opinions. An expert who says "in my experience, X causes Y" without grounding the opinion in literature, guidelines, or data is offering exactly the kind of unsupported testimony Daubert exists to filter out.
  • Failing to address causation rigorously. Especially in toxic-tort and product cases, courts increasingly require general and specific causation analyses to be separately and rigorously supported.
  • Stale credentials. Expired board certifications, lapsed licensure, or long gaps from clinical practice are all openings for opposing counsel to attack reliability.

Practical takeaways

If you're picking a medical expert for a Florida case today, ask three questions before retaining anyone:

  1. Can this physician point to a body of clinical work and peer-reviewed publications in the specific area where they'll opine?
  2. Have they testified before, and has any prior testimony been excluded on Daubert grounds?
  3. Can they articulate the methodology behind their opinion in a way that maps onto the five Daubert factors?

If the answer to any of those is uncertain, keep looking. The cost of replacing an expert before trial is a fraction of the cost of having one excluded mid-case.