Short answer
OTR is for occupational therapists; COTA is for occupational therapy assistants. Each has its own NBCOT exam.
USA NBCOT Exam: Quick Facts
- Offered by
- NBCOT
- OTR questions
- 180
- Time
- 4 hours
- Passing
- 450 (300–600)
- Fee
- About $540
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