A consent form is your first chance to understand what HBOT will do, what it might do, and what could go wrong. A good form is detailed, honest, and signed before any pressure to commit.
This guide walks through what a legitimate HBOT consent form includes — and what to do when the form raises concerns.
Use it before signing anything.
What a real consent form discloses
A legitimate HBOT consent form covers:
- The specific indication being treated (FDA-approved or off-label, stated clearly)
- The chamber model and FDA 510(k) clearance status
- Pressure and dose (e.g., 2.4 ATA for 90 minutes on 100% oxygen)
- The number of sessions in the proposed protocol
- Known complications and their typical rates
- The medical director's name and credentials
- The emergency response plan
- Pricing and refund policy
Each item should be in plain language. Medical jargon without explanation is not informed consent.
Red flag 1: cure language
The first thing to watch for is curative or disease-modifying language. A consent form that promises a condition will be "treated," "reversed," "cured," or "improved" is overpromising.
Real informed consent describes what the treatment is meant to do. Examples: improve tissue oxygenation, support wound healing, manage the bends. It does not promise outcomes for the patient's specific case. See the decompression sickness evidence atlas for the full study-by-study evidence breakdown.
The FDA consumer warning (2021) is direct that promotional violations follow when clinics make curative claims for off-label uses. A consent form with cure language is one signal the clinic may be in violation.
Red flag 2: missing FDA framing
A real consent form states whether the indication is FDA-approved or off-label.
For FDA-approved uses — diabetic foot ulcers, the bends, CO poisoning, others in the Medicare HBOT policy (2024) — the form should say so.
For off-label uses (autism, ADHD, TBI, longevity, athletic recovery), the form should note the use is off-label. Off-label medical use is legal in the US when a physician prescribes it. The patient deserves to know. See the HBOT-for-ADHD evidence in detail for the trial-by-trial ADHD evidence breakdown.
A form that does not address the FDA status at all is hiding relevant information.
Red flag 3: missing complications disclosure
Known HBOT complications include:
- Oxygen toxicity (CNS or pulmonary) — roughly 1 to 2% of sessions
- Ear barotrauma — 2 to 10% of patients
- Sinus barotrauma
- Pneumothorax (rare but serious)
- Confinement anxiety
- Fire risk inside the chamber
- Temporary myopia (sometimes after long protocols)
A real consent form lists these and approximate rates. The Camporesi 2014 review (2014) provides the source data for the rates.
A form that lists no complications, or only generic "minor side effects may occur" language, is hiding the risk profile.
Red flag 4: missing medical director credentials
The form should name the medical director and state their hyperbaric training. Credentials typically include:
- Board certification in undersea and hyperbaric medicine
- Or board certification in a primary specialty (internal medicine, emergency medicine, others) plus hyperbaric subcertification through American Board of Medical Specialties (2024)
- Or completion of an approved hyperbaric medicine fellowship
- Or Certified Hyperbaric Specialist status
A form that lists only a clinic owner without medical credentials misses a key disclosure. So does one that omits the medical director.
Red flag 5: no emergency response disclosure
The form should describe what happens if symptoms appear in a session. A real plan includes:
- What symptoms operators are trained to recognize
- The escalation path (interrupt session, decompress, contact medical director, call 911)
- The clinic's emergency equipment and staff training
- Where the patient would be transferred for higher acuity care
A form that does not address emergencies suggests the clinic has not thought through emergency response. That is a culture problem.
Red flag 6: no chamber clearance information
A real form names the chamber model and FDA 510(k) clearance (2024). Cross-check the number in the FDA database under product code CBF.
Common chambers and clearances:
- Sechrist Industries 3300 — K052713
- Perry Baromedical Sigma 3400 — K990927
- Summit to Sea Dive — K072757
- ETC Biomedical multiplace lines — various clearances
- Healing Chambers International — various clearances
- OxyHealth Vitaeris and Newtowne Hyperbarics soft chambers — clearances for acute mountain sickness
A form that does not name the chamber or provide the 510(k) number is hiding equipment details that matter.
Red flag 7: pressure to sign before review
Real consent lets the patient read, think, ask questions, and decide. High-pressure settings are the opposite of informed consent.
Watch for:
- Forms presented at the same time as financial commitments
- Forms presented just before the first session begins
- Forms with terms patients are told they must accept verbatim
- Forms with arbitration or waiver clauses presented as routine
Take the form home, read it, and ask questions. Sign it before treatment, not under duress.
Red flag 8: package pricing locked into consent
Some clinics tie consent to multi-session package purchases. The form lists 40 sessions, the price for the package, and a refund policy that makes withdrawal expensive.
There is nothing wrong with packages in principle. The flag is when the consent form ties medical permission to financial commitment in a way that locks the patient in.
A legitimate consent form is per-session or per-course, with clear written refund terms for unused sessions.
What to do when the form has issues
If the consent form raises any of the flags above, you have options:
- Ask the clinic to revise the form before signing
- Request a second opinion from a physician outside the clinic
- File a complaint with the state medical board if a physician supervisor is involved
- File a complaint with the FTC consumer protection site (2024) if false advertising is involved
- File a complaint with the FDA MedWatch program (2024) for chamber safety issues
A clinic that revises the form on feedback is one to consider. A clinic that pushes back is one to walk from.
Where consent forms intersect with clinic culture
A good consent form usually maps to good clinic culture. Clinics that take consent seriously also take safety basics seriously.
Clinics that treat consent as paperwork to get past often have similar gaps in operator training, medical supervision, and emergency response.
The form is a window into the program.
Related reading
- HBOT clinic red flags: signs of unsafe practice
- Questions to ask before booking an HBOT clinic
- How to verify a clinic's chamber is medical grade
- UHMS-accredited HBOT facilities: what certification means
Frequently asked questions
How long should I have to review a consent form before signing?
There is no fixed rule. Anything less than 24 hours for an elective off-label treatment is concerning. For acute uses (the bends, CO poisoning), faster review is needed because time matters. For wellness or elective HBOT, take the form home, read it, and sign on a return visit if needed.
Can I cross out terms I disagree with?
Yes. Consent is between you and the clinic. You can negotiate terms before signing. Common areas to negotiate include arbitration clauses, package refund policies, and outcome guarantees. A clinic that refuses to discuss the form is a clinic to question.
What if the form has language I do not understand?
Ask the clinic to explain in plain language. If they cannot or will not, that is a flag. A real informed consent form uses language you understand. Medical jargon without explanation is not informed consent.
Should the medical director sign the form too?
Best practice yes, especially for FDA-approved uses and any off-label use. A form signed only by patient and clinic staff misses the supervising physician's responsibility for the treatment decision.
What if I have already signed but want to withdraw?
You can withdraw consent at any time. The clinic should accept withdrawal without penalty for sessions not yet given. If the clinic resists, document it and consider a complaint to the state medical board.
Medical disclaimer
This article is for informational purposes only and is not medical or legal advice. Consent forms are the patient's record of what was disclosed before treatment. Always review the full document, ask questions, and keep a signed copy. Consult your doctor before pursuing HBOT.
-- The HBOT Finder Team