Patch testing is used to identify delayed allergic skin reactions, known as allergic contact dermatitis. If you develop red, itchy rashes days after using certain products such as lotions, cosmetics, detergents, jewelry, or workplace materials your immune system may be reacting to a specific ingredient. Patch testing helps identify the exact substance causing your skin reaction so it can be avoided.

How It Works / What to Expect?

Patch testing is non-invasive and needle-free and takes place over several days.

• Small adhesive patches containing common allergens are placed on your upper back
• The patches remain in place for 48 hours to allow delayed reactions to develop
• You return for scheduled readings to check for skin reactions
• Mild itching may occur, but the process is generally comfortable and safe

This testing detects delayed immune reactions caused by T-cells, not immediate IgE-based allergies.

Types of Testing

• Multi-day patch testing using standardized allergen panels
• Allergens commonly tested include metals, fragrances, preservatives, dyes, rubber, and chemicals found in everyday products
• Skin reactions are evaluated at multiple time points to ensure accuracy

Who Should Consider This Service

Patch testing may be helpful if you experience:

• Chronic or recurring itchy rashes
• Rashes triggered by jewelry, metals, or clothing
• Eyelid, face, neck, or scalp dermatitis
• Recurrent hand or foot dermatitis
• Occupational skin reactions (e.g., healthcare, construction, hair styling, dentistry)

This test is not a general allergy screening and is specifically designed for skin-related allergic reactions.