CLT Practice Test 2026 October — Free Certified Lymphatic Therapist Exam Prep
Pass your CLT exam on the first attempt. Practice questions with detailed answer explanations, hints, and instant scoring. ✏️
Sample CLT - Certified Lymphatic Therapist Practice Questions
Try these questions from our free CLT - Certified Lymphatic Therapist practice tests. The correct answer and an explanation follow each question.
What distinguishes lymphatic capillaries from blood capillaries?
- A. Lymphatic capillaries have a complete basement membrane
- B. Lymphatic capillaries have overlapping endothelial cells acting as one-way valves
- C. Lymphatic capillaries carry red blood cells
- D. Lymphatic capillaries are smaller in diameter
Answer: B. Lymphatic capillaries have overlapping endothelial cells acting as one-way valves
The overlapping endothelial 'flap' cells of lymphatic capillaries allow large molecules and excess fluid to enter but prevent backflow.
Who developed the original Manual Lymphatic Drainage (MLD) technique in the 1930s?
- A. Robert Lauche
- B. Emil and Estrid Vodder
- C. Hildegard Wittlinger
- D. Michael Foeldi
Answer: B. Emil and Estrid Vodder
Dr. Emil Vodder and his wife Estrid developed MLD in France in the 1930s based on their observations of patients with chronic sinusitis and swollen lymph nodes.
What is the 'safety valve' of the lymphatic system?
- A. The thoracic duct valve
- B. The lymphatic system's reserve capacity to handle excess fluid beyond normal load
- C. Lymph node filtration of pathogens
- D. The venous angle junction with the subclavian vein
Answer: B. The lymphatic system's reserve capacity to handle excess fluid beyond normal load
The safety valve refers to the lymphatic system's ability to increase flow by 10–20 times above baseline when interstitial fluid accumulates.
A patient presents with acute inflammation following an insect sting on the forearm. The therapist should:
- A. Perform MLD distal to the sting to reduce distal edema
- B. Apply compression bandaging immediately to reduce swelling
- C. Avoid MLD on the affected limb until acute inflammation resolves
- D. Perform MLD proximal to the sting site only
Answer: C. Avoid MLD on the affected limb until acute inflammation resolves
Acute inflammation is a local contraindication; MLD should be avoided in the area because it could spread inflammatory mediators and worsen the reaction.
Take the full CLT - Certified Lymphatic Therapist practice test
About the Author
Registered Nurse & Healthcare Educator
Johns Hopkins University School of NursingDr. Sarah Mitchell is a board-certified registered nurse with over 15 years of clinical and academic experience. She completed her PhD in Nursing Science at Johns Hopkins University and has taught NCLEX preparation and clinical skills courses for nursing students across the United States. Her research focuses on evidence-based exam preparation strategies for healthcare certification candidates.