RTT is an abbreviation with several common meanings depending on the context. In healthcare, it most often refers to either the NHS Referral to Treatment pathway, a Registered Respiratory Therapist, or a Radiation Therapist. In the world of therapy and personal development, it stands for Rapid Transformational Therapy. Here’s what each one means and why it matters.
NHS Referral to Treatment (RTT)
If you’ve seen “RTT” on an NHS letter or hospital communication, it refers to the Referral to Treatment pathway. This is the system the NHS uses to track how long patients wait between being referred by a GP and actually starting treatment. The NHS Constitution states that patients should wait no longer than 18 weeks from GP referral to the start of consultant-led treatment.
The 18-week clock starts the moment a care professional (usually your GP) refers you to a consultant-led service. It also starts if you self-refer through an approved pathway. The clock stops when your treatment begins, whether that’s surgery, a first therapy session, or another intervention. It can also stop if a decision is made that treatment isn’t needed.
There are a few situations where the clock resets or pauses. If you miss your first appointment without letting the hospital know (called a “DNA,” for did not attend), the clock is nullified entirely, as the NHS considers that you’ve chosen not to start your pathway. Missing later appointments doesn’t automatically stop the clock, but it can lead to being discharged back to your GP, which does stop it.
RTT waiting times are one of the most closely watched performance metrics in the English NHS. When news reports mention record waiting lists or delays for hospital treatment, they’re usually referring to RTT data.
Rapid Transformational Therapy (RTT)
Rapid Transformational Therapy is a form of talk therapy developed by therapist Marisa Peer. It combines elements of hypnosis, cognitive behavioral therapy (CBT), and neuro-linguistic programming (NLP) into a single approach that aims to identify and address the root causes of psychological issues in a small number of sessions.
During an RTT session, a therapist guides you into a relaxed, focused state similar to hypnosis. The idea is that in this state your subconscious mind becomes more accessible, making it easier to uncover beliefs or memories that drive unwanted behaviors. The therapist then uses techniques drawn from CBT to help you reframe negative thought patterns and replace them with more constructive ones. NLP techniques are layered in to shift the language patterns that shape how you think about yourself and your experiences.
Sessions typically last between 90 minutes and two and a half hours. Practitioners often say that most clients see significant results within one to three sessions, though more complex issues like disordered eating may require additional work. This stands in contrast to traditional therapy models that involve weekly sessions over months or years. It’s worth noting that RTT is not regulated in the same way as licensed psychotherapy or clinical psychology, and the evidence base for it is largely anecdotal rather than drawn from large-scale clinical trials.
Registered Respiratory Therapist (RRT)
In U.S. healthcare, you may see the abbreviation RRT (sometimes loosely called RTT) after a clinician’s name. This stands for Registered Respiratory Therapist, a credential awarded by the National Board for Respiratory Care (NBRC). It’s considered the standard of excellence for respiratory care professionals and serves as the basis for licensure in 49 states.
Respiratory therapists work with patients who have breathing difficulties, from premature newborns with underdeveloped lungs to adults with chronic conditions like COPD or asthma. They also play critical roles in emergency and intensive care settings, managing ventilators and other life-support equipment. To earn the RRT credential, candidates must graduate from an accredited respiratory care program and achieve a high score on a national competency exam. A lower score on the same exam results in a Certified Respiratory Therapist (CRT) credential instead.
Radiation Therapist (RTT)
RTT also stands for Radiation Therapy Technologist (or simply radiation therapist). These healthcare professionals operate machines like linear accelerators to deliver targeted doses of radiation to tumors in cancer patients. Their day-to-day work involves precisely positioning patients, calibrating equipment, monitoring for side effects during treatment, and keeping detailed records of each session.
Becoming a radiation therapist typically requires an associate’s or bachelor’s degree in radiation therapy or a related science field, with coursework in human anatomy, physics, and radiation procedures. Most states require licensure or certification, which involves passing a national exam. Programs include hands-on clinical training alongside classroom instruction, so graduates enter the field with practical experience operating treatment equipment and working directly with patients.

