Doctor testing a childs skin in her office

Patch Testing in Washington, DC

Dr. Alison Ehrlich has been director of a referral patch testing clinic in the metro DC area for the past 17 years and has published and lectured extensively on contact dermatitis. Her publications on contact dermatitis include recommendations on specialized trays for vaginal, stoma, and shoe dermatitis. She is an active member of the American Contact Dermatitis Society and continually adapts her testing materials as allergens evolves.

Contact dermatitis is a skin condition characterized by rash-like symptoms due to contact with allergens or irritants. Many chemical substances and everyday products can cause these skin reactions such as costume jewelry or fragrances in cosmetic products. The allergens responsible for allergic contact dermatitis (ACD) can be tested for through a procedure called patch testing.
Patch testing is a week-long diagnostic test used to determine the specified cause of a patient’s recurrent rashes. It is the most reliable way to diagnose allergic contact dermatitis. A separate consultation must be booked prior to the testing being scheduled.

The patch testing process consists of three office visits in one week:

1. Monday Visit: Allergens are placed on the back using specialized chambers which are affixed to the skin with skin-safe/medical tape.

2. Wednesday Visit: The allergens are removed from the patient’s back and the test sites are assessed.

3. Friday Visit: On the third and final visit, the test sites are re-assessed, and the patient is educated on the results.

The total cost of patch testing including all three visits will range approximately between $1,800-$3,000 depending on the number of allergens tested. The total will be broken up into three payments and each payment is expected by the end of the respective visit. Please note that our office does not participate with any insurance plans. You can file an insurance claim after all three visits are completed for reimbursement of patch testing with your insurance company.
Please avoid using moisturizers on your back in the 24 hours prior to patch testing. Some of our patients are extremely sensitive to fragrances so please avoid using perfumes during the week of testing. If you have significant hair on your back, please shave this area 36 hours prior to testing. Avoid application of topical steroids for 10 days prior to patch testing. Patch testing can be messy, so it is best to wear old clothes that are less likely to show stains (blue/black is preferred). If we are testing personal products, please bring them to the office the week prior to testing.

Please note: click here for patch testing instructions.

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