What are skin tests?
Skin tests may be done to diagnose skin allergies, food allergies, bacterial or fungal
skin infections, and other diseases. Skin tests are also done to tell the difference
between cancer (malignant) cells and noncancer (benign) growths.
What are the most common skin tests?
Skin biopsy. This test is used to diagnose skin cancer or skin disorders. A skin sample is removed
and checked in a lab. Local anesthesia is injected to numb the area first. The sample
may then be removed with a scalpel. For a shave biopsy, the skin sample may be removed
with a razor blade. The sample is removed with a special tool (cylindrical punch)
for a punch biopsy.
Culture. Skin, hair, or nails may be cultured to find bacteria, fungi, or viruses.