CDT Study Guide 2026
Everything you need to pass the CDT 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.
📋 CDT Exam Format at a Glance
📚 CDT Topics to Study (69)
✍️ Sample CDT Questions & Answers
1. The papillary dermis differs from the reticular dermis in that it contains:
The papillary dermis is composed of loose connective tissue with capillary loops that nourish the avascular epidermis.
2. A patient scheduled for a full-face laser resurfacing asks if she needs antiviral prophylaxis. The CDT correctly explains that prophylaxis is indicated for patients with a history of:
Antiviral prophylaxis is standard before laser resurfacing for patients with a history of HSV, as the procedure can trigger a widespread herpes outbreak across the treated area.
3. A wound with purulent drainage, periwound erythema extending more than 2 cm, warmth, and fever most likely indicates:
Purulent drainage combined with spreading erythema >2 cm, warmth, and systemic signs like fever indicates wound infection requiring treatment.
4. What is the mechanism of action of salicylic acid in dermatologic products?
Salicylic acid is a keratolytic beta-hydroxy acid that dissolves intercellular cement between skin cells, promoting shedding of dead skin and clearing clogged pores.
5. The Bloodborne Pathogens Standard (29 CFR 1910.1030) is enforced by which federal agency?
OSHA enforces the Bloodborne Pathogens Standard, which mandates exposure control plans and protective measures for healthcare workers.
6. A patient with rosacea is most likely to report worsening symptoms after which trigger?
Spicy foods are a common trigger for rosacea flares because they induce facial flushing and vasodilation.