Patch Testing
what is patch testing?
This type of skin testing evaluates delayed reaction, also known as "delayed hypersensitivity", instead of immediate reactions with regular allergy skin testing.
how does it work?
- It requires three short visits . Patches are placed on the back at the first visit by our staff and then removed by our staff at 48 hours, The physician reviews the results at 72 hours.
- The number of patches varies but will average between 30 and 50. Each panel contains ten patches.
- Patient do NOT need to be off oral antihistamines for this type of testing, but cannot have been on recent topical steroids on the back or high dose oral steroids.
what should I expect?
- During the 48 hours the patches are on the back, you may not wash or scrub the area, being cautious with showering and bathing.
- You may experience minimal itching at the various patch sites.
- This does not cause reactions throughout the body; they stay localized to the patch.