Skin Biopsy Test
A skin biopsy removes a small sample of skin to check for conditions like skin cancer, infections, or skin disorders such as psoriasis.
What this test measures
A skin biopsy looks at a skin sample under a microscope to diagnose skin conditions, including skin cancer (basal cell carcinoma, squamous cell carcinoma, melanoma), bacterial or fungal infections, and skin disorders like psoriasis and eczema.
What your results mean
Reference ranges vary by laboratory and by your age and sex. MedlinePlus does not publish a single normal range for this test — always read your result against the range printed on your own lab report and discuss it with your provider.
Frequently asked questions
What is a skin biopsy?
A skin biopsy is a procedure that removes a small sample of skin to check for conditions like skin cancer, infections, or skin disorders.
What are the types of skin biopsy?
The three main types are punch biopsy, shave biopsy, and excisional biopsy.
What can a skin biopsy diagnose?
It can diagnose skin cancer (basal cell, squamous cell, melanoma), bacterial or fungal infections, and skin disorders like psoriasis and eczema.
What does a normal skin biopsy result mean?
A normal result means no cancer or skin disease was found.
What happens if melanoma is found?
If melanoma is diagnosed, you will need more tests to see if the cancer has spread, and then you and your provider can develop a treatment plan.
Related lab tests
Sources
- MedlinePlus: Skin Biopsy — NIH MedlinePlus
Last updated . Information is aggregated from official public sources and is not a substitute for professional medical care.