COHN Study Guide 2026
Everything you need to pass the COHN exam in one place: the exam format, every topic to study, real practice questions with explanations, flashcards, and full-length practice tests. Free, no sign-up needed.
📋 COHN Exam Format at a Glance
📚 COHN Topics to Study (69)
✍️ Sample COHN Questions & Answers
1. An employee is diagnosed with occupational asthma caused by workplace chemical exposure. Under OSHA recordkeeping, this is classified as a:
Occupational diseases or conditions resulting from workplace exposures are classified as illnesses on OSHA records.
2. Initial De Quervain disease treatment entails:
Applying a thumb spica splint to immobilize the thumb and wrist and beginning a 2-week course of nonsteroidal anti-inflammatory medicines are the first steps in treating De Quervain disease (NSAIDs). If immobilization and anti-inflammatory medication fail, corticosteroid injections are typically the next step in treatment. Surgery would be the next course of action after corticosteroid injections. This condition cannot be treated with physical therapy.
3. Treatment for exposure to lead
The treatment for lead exposure typically involves two main approaches: removing the individual from further exposure to lead and implementing chelation therapy.
4. The purpose of a 'job demands analysis' (JDA) in occupational health is BEST described as:
A JDA identifies and quantifies the essential physical, cognitive, and environmental demands of a job to enable proper matching of worker capability to job requirements.
5. An employee involved in a motor vehicle accident during a business trip sustains a broken wrist. Under OSHA recordkeeping, this injury is:
Injuries sustained while performing work-related tasks during travel are considered work-related and must be recorded if they meet recordability criteria.
6. A COHN-S is reviewing noise dosimetry results. A worker's full-shift dose reads 105%. Per OSHA 29 CFR 1910.95, which action is REQUIRED?
OSHA requires enrollment in a hearing conservation program when an employee's noise exposure equals or exceeds an 8-hour TWA of 85 dBA (50% dose = 85 dBA, so 105% = well above action level).