Boolean search strings for respiratory therapists: CRT versus RRT, NBRC specialties and the RT abbreviation problem

Respiratory therapist searches share an abbreviation with a different profession. "RT" is how respiratory therapists describe themselves, but radiologic technologists write R.T. after their names, and the same two letters mean real-time, retweet and RT-PCR. Spell the title out and the list still mixes respiratory therapy students, pulmonary function technicians, sleep technologists, nurses who manage ventilated patients and home medical equipment drivers, alongside therapists from units very different from the client's.

The NBRC credential and the unit separate them. Below are ten strings by unit and specialty, and what Indeed, LinkedIn and Google support as of October 2026. For screening once you have a list, see the respiratory therapist screening questions.

Credentials and licenses that change what an RT search finds

• How CRT and RRT are earned now. NBRC's CRT page says the Therapist Multiple-Choice Examination has two cut scores: the low one earns CRT, and the high one earns CRT plus eligibility for the Clinical Simulation Examination. Passing that simulation earns the RRT.
• What changes in 2027. NBRC's 2027 exam announcement says a single Respiratory Therapy Examination starts in January 2027, with the low cut score earning CRT and the high cut score earning RRT, and the Clinical Simulation Examination eliminated. Candidates who pass the current exam at the high cut score before December 31, 2026 can still take the simulation through December 31, 2027. Expect new-graduate profiles to stop saying "RRT-eligible" over the next year or two.
• The state license. The AARC's state licensure table lists Alaska as the only state without respiratory therapist licensure, as of October 2026. The license is issued by the state; the NBRC credential is separate. This is not legal advice.

Ten Boolean strings by unit and specialty

Swap in the unit, city and credential from your own intake; these are examples.

Critical care, neonatal and ECMO

1. Adult ICU RT — LinkedIn Recruiter, Job titles + Keywords filters
("respiratory therapist" OR "registered respiratory therapist" OR "respiratory care practitioner") AND (rrt OR "rrt-accs") AND ("mechanical ventilation" OR "ventilator management" OR icu) NOT ("radiologic technologist" OR radiology OR student)

2. NICU and PICU RT — LinkedIn general search
("respiratory therapist" OR "neonatal respiratory therapist") AND ("rrt-nps" OR "neonatal/pediatric specialist" OR nicu OR picu) AND (nrp OR pals OR "neonatal ventilation")

3. ECMO-trained RT — LinkedIn general search
("respiratory therapist" OR "ecmo specialist") AND (ecmo OR "extracorporeal membrane oxygenation") AND (rrt OR "registered respiratory therapist") NOT (perfusionist OR student)

Hospital floor, LTACH and home care

4. Staff hospital RT — Indeed Smart Sourcing
("respiratory therapist" OR "staff respiratory therapist") AND skill: ("arterial blood gas" OR abg OR bipap OR "mechanical ventilation") AND (rrt OR crt) NOT ("radiologic technologist" OR student)

5. Long-term acute care and vent weaning — LinkedIn general search
("respiratory therapist") AND (ltach OR "long-term acute care" OR "ventilator weaning" OR tracheostomy) AND (rrt OR crt) NOT student

6. Home care RT — Indeed Smart Sourcing
("respiratory therapist" OR "home care respiratory therapist") AND skill: ("home medical equipment" OR dme OR "home ventilator" OR "oxygen therapy") AND (crt OR rrt) NOT (driver OR "delivery technician")

Diagnostics, new graduates and X-ray

7. Sleep lab RT — Indeed Smart Sourcing
("respiratory therapist" OR "sleep technologist") AND skill: (polysomnography OR "sleep studies" OR cpap) AND (rrt OR crt OR "sleep disorders specialist")

8. Pulmonary function lab — LinkedIn general search
("pulmonary function technologist" OR "respiratory therapist") AND (cpft OR rpft OR "pulmonary function testing" OR spirometry) NOT student

9. New graduate RT — Indeed Smart Sourcing
("respiratory therapist" OR "respiratory therapy graduate") AND fieldofstudy: ("respiratory therapy" OR "respiratory care") AND (tmc OR "therapist multiple-choice" OR crt OR "clinical simulation")

10. Public profiles by city — Google X-ray
site:linkedin.com/in "registered respiratory therapist" "nicu" "houston" -jobs -recruiter -student

What Indeed, LinkedIn and Google actually support

Indeed's healthcare Boolean guide shows AND, OR, NOT, quotes and parentheses, a skill: field for the skills section, and fieldofstudy: and school: for education, as of October 2026. Respiratory therapists tend to list modalities such as BiPAP, ABGs and ventilator management as skills, which is why strings 4, 6 and 7 put them behind skill:.

LinkedIn's Boolean help page requires capital AND, OR and NOT, supports quotes and parentheses, and does not support wildcards. Credentials appear as "RRT-NPS," "RRT NPS" and "RRT, NPS," and a hyphenated term may be split by the search index, so include the plain specialty phrase as well. LinkedIn Recruiter's Boolean page lists Job titles among the filters that accept Boolean and warns that too many facets in one query can cause problems.

Google's search operators page documents quotes, site:, the minus sign and filetype:, but not OR. Keep an X-ray to one credential and one unit per query, as string 10 does, and quote "registered respiratory therapist" so the radiology R.T. does not creep in.

Narrowing by credential, license and unit

Ask at intake whether the role requires RRT, accepts CRT, or accepts CRT with RRT required within a set period. That single answer decides whether "crt" belongs in the credential block. For specialty units, ask whether the specialty credential is required or simply preferred; requiring RRT-NPS for a NICU role shrinks the pool sharply, and many experienced NICU therapists never sat for it.

License comes next. Outside Alaska, the therapist needs a license from the client's state board before practicing, and a therapist moving from another state has to apply for one. Ask the client how long it can wait and whether it will consider candidates mid-application.

Unit vocabulary does the rest. Adult ICU therapists write about ventilator management, ARDS and proning; neonatal therapists write about surfactant, high-frequency ventilation and delivery room attendance; home care therapists write about oxygen setups and home ventilators. Put the client's unit vocabulary in a required block and add one term at a time.

False positives worth excluding with NOT

• Radiologic technologists. The R.T. credential and "radiology" share the abbreviation. Exclude "radiologic technologist" and "radiology" for respiratory searches. For imaging searches, see Boolean search strings for radiology technologists, which exclude respiratory terms the same way.
• Students. "Respiratory therapy student" profiles list every modality. Exclude "student" unless the client hires new graduates.
• Nurses on ventilated units. ICU nurses list ventilator care too. Require a respiratory credential. For nurse searches, see Boolean search strings for nurses.
• Equipment drivers and sales. Home medical equipment drivers and respiratory product sales representatives match "oxygen" and "ventilator." Exclude "driver," "delivery technician" and "sales."
• Perfusionists. ECMO searches pull in perfusionists, who are a different profession. Exclude "perfusionist" when the role is a respiratory therapist covering ECMO.

A worked example: three passes on a NICU search

An invented search, shown as it actually gets narrowed.

The clinical terms did the work the abbreviation could not. For respiratory therapists, what they manage at the bedside places them faster than the title does.

What a search cannot verify

A string can find someone whose profile lists the right credential and unit. It cannot confirm that a license is active, that an NBRC credential is current, or how the therapist responds when a ventilated patient desaturates and the alarms disagree with the monitor. The respiratory therapist screening questions test that judgment, the recruiter phone screen template covers shift, license and logistics, and the interview guide for healthcare roles covers the department manager's round.